Perfect Girlfriend Juice

by Fidget

Chapter 7: Cultivating a Fertile Workplace Relationship

Part 6

So, Michelle began staying over at Derek’s place more often, even leaving for work together with him, and she soon had her own corners of his closet and bathroom where she’d started keeping clothes and toiletries.

Amid all the changes as they began their as-yet-undefined relationship, the one thing that remained constant was how often they fucked, though it still was nowhere near often enough to satisfy the inexhaustible sluttiness of Michelle’s pussy.

At first, she was curious about the strength of Derek’s continued desire for her body—now that his sexy dick had done its masculine job and knocked her up with his child, she had expected his carnal interest in her to wane, but if anything, it almost seemed like Derek was more turned on by her now that he had found out that he’d knocked her up.

As they continued fucking, and as Michelle began to show, she began to have an inkling about where all of this lust was coming from, one that also explained some of his earlier behavior as well: it seemed to her that Derek had a bit of a breeding fetish.

That was fine with Michelle, of course, since she was already obsessed with the idea of getting as many guys’ cum inside her as she could; this just meant that she too now found herself growing hotter and hotter at the idea of getting knocked up on all of that cum and being made to swell and lactate and reproduce.

Her suspicion was confirmed one day a few weeks after beginning to show, starting with the way he stared at her body as she rode him. She mounted him and went to town as she usually did, her slutty pussy milking his cock for all it was worth as his gaze moved between the small bump forming in her petite torso and the areolas just beginning to grow and darken under the influence of her new pregnancy hormones.

Driven by the Juice as her slutty pussy slowly gripped and squeezed and coaxed his cock, Michelle acted on a hunch and, with the most seductive facial expression she could manage, hefted her tiny, pointy breasts and pointedly told him how tender and heavy and swollen they had been feeling recently.

Her gambit was immediately rewarded with the sensation of Derek’s body tightening up beneath hers, while his eyes grew wide with unrestrained lust as his gaze locked onto the slight bouncing of her tiny tits and erect nipples from the intensity of her exertions. Derek let out a deep, gutteral moan of release as his body dumped another pleasurable, pulsating load into Michelle’s slutty pussy, and now both lovers’ orgasms were enhanced by the fact that his seed was inside her body, changing her, claiming her womb as his own.

And, with each spurt inside her, with each twitch of Derek’s hips against hers, Michelle felt her boobs bouncing back the tiniest bit bigger, more swollen, more tender, as the Juice molded her body into what Derek clearly wanted, whether he was aware that he wanted it or not.

Derek fell asleep minutes later spooned against Michelle’s smooth skin, his hand clasped possessively—and painfully tightly—around Michelle’s heavy, swollen breast.

It was obvious that the Juice wouldn’t stop there, of course, now that Michelle had an inkling of what was really driving Derek’s lust, and a few days later she felt that pregnant curiosity brewing inside her again while Derek fucked her, and she knew that by the end of the night she’d be different once again.

He was on top this time, leisurely thrusting into her, enjoying both the pleasure her slutty pussy was giving him and the sight of her soft, increasingly pregnant body swelling beneath him.

“I like you like this.”

“What do you like?” she asked playfully, just as unable to resist her Juice-driven yearning for information about Derek’s Perfect Girlfriend as she was her need to fill her slutty pussy. The urge to fill herself with cum was still just as strong today as it had been months ago when Derek had first given it to her.

“I like your wider hips and bigger tits.”

Michelle moaned as she felt herself growing into an even more stereotypical picture of fertility with each of Derek’s thrusts, her new plumped-up tits and birthing hips nicely complementing the noticeable bulge still slowly growing in a tummy that had fully lost its original bony scrawniness.

Derek kept thrusting heedlessly away into her hungry, slutty pussy for a few seconds, but Michelle felt his pumping growing more and more urgent as she rounded out, until finally his eyes widened as he realized what he was doing to her. But the Juice wasn’t about to let Michelle stop now.

“Mmm, do you like that, my big horny masculine man?” she asked coyly, the curiosity burning brightly within her, forcing her to egg him on until he embraced the lack of filter that came with his growing arousal and spilled his deepest, darkest fantasies along with his seed. This time she wasn’t going to assume—this time he was going to say exactly what he wanted, and she was going to change. “You like the idea of turning me into a swollen, fertile breedslut, don’t you?”

He gave in, just as she’d known he would. “Oh god yes!” he gushed as he got closer and closer inside his baby mama’s juicy pussy. “I want you curvy and breedable, and so fertile that once your womb is free, you can’t help but fill your slutty pussy with the first cock you find and get knocked up again!”

Michelle felt her own orgasm getting close at how hot that idea suddenly seemed to her. She knew the Juice was working within her, changing her, making her womb even more fertile and demanding and breedable. She relished the sensation of Derek sinking his sensitive cock deep inside her insatiable pussy once more, now aware that as soon as her womb was empty again her slutty pussy would immediately begin working to make sure that Derek, or any other guy for that matter, would lose control inside her as soon as possible so that she could get pregnant again. She couldn’t wait.

Michelle felt her mind latching on to a portion of that last thought and found herself suddenly fantasizing about being with other men—with how slutty her pussy was, combined with how there weren’t enough cocks for her in the entire world, in spite of herself Michelle suddenly felt a growing urge to put herself out there more, to get a bit more genetic variety in the cum she filled her slutty pussy with. Even though she was already pregnant, Derek’s words had again and again implied that she was a slut that should be seeking out all cocks, not just his.

Suddenly the thought of going behind Derek’s back once she was fertile again and letting some other horny bull cum inside her and knock her up was more than her curvy, bred body could handle, and she dissolved into throes of mindless orgasmic contractions that squeezed and pulled persuasively at Derek’s stiffening cock.

“Unggh, here it comes! If you weren’t already a knocked up cumslut you would be now!”

She wrapped her legs around him and pulled him deeply inside as he began spurting, finally giving her slutty pussy what it craved. Michelle loved feeling Derek filling her up like this, though she also knew she’d love any other guy filling her up just as much.

Eventually his spurts began to slow, but Michelle’s pussy continued to burn with lust even after having just been inseminated. She loved how it felt, how horny it made her. “Derek, can you keep my pussy slutty like this?” she asked. “I know that the Juice will make me into whatever you want me to be, but I really like my slutty pussy.”

“I wouldn’t have it any other way. I want you desperate for cock.”

Part 7

The next night Derek was surprised and a bit worried when Michelle didn’t come over immediately after work like she usually did. She had begun working later hours again after he’d told her that he wanted her to be successful, but her need for his cock usually drove her home at some point in the evening. She still had her own place, of course, but because her slutty pussy compelled her to fuck him so often, she was never able to go a full day without giving in to the urge to come over for a booty call.

As the thought of Michelle’s nice, thick, knocked-up booty began to get a rise out of his cock, it occurred to him that he genuinely missed her. Much more than he’d expected to.

It was after midnight when his doorbell finally rang, but when he opened the door, expecting Michelle to be decked out in her usual slutty makeup and skimpy clothes, ready to seduce him and get her pussyfull of cum for the day, he was instead surprised to see that her hair was a mess, her makeup was smudged, and her clothes looked like they’d been haphazardly thrown onto her body. If anything, it looked like Michelle had just been fucked, and fucked hard.

“Michelle, where on earth have you been??”

“Oh God Derek, I just couldn’t take it anymore! There aren’t enough cocks in the world to satisfy my slutty pussy, and I’m sorry, but as nice as your dick is, it’s nowhere near enough.”

“Wait, what are you saying? Did you cheat on me?!?”

“Of course I did, dumbass! And it felt soooo good!”

While Derek stood there in shock at her blunt admission, Michelle launched into her story.

“I was getting ready to leave work and head over here this evening, but the thought of spending another night with the same old cock and the same old cum was just unbearable. My slutty pussy needs variety, Derek, and I honestly couldn’t resist the urge even if I wanted to. Which I don’t,” she concluded matter-of-factly with her hands crossed over her big, Juice-and-pregnancy-swollen tits.

Derek was still too taken aback to say anything, so Michelle continued her slutty story.

“So, instead, I went to a bar. I ordered a virgin cocktail, pulled my top down until a hint of fat nipple was showing on the massive pregnancy udders you gave me, and waited for the inevitable to happen.

“It didn’t take long. A handsome older man, a bit rough looking and unshaven, walked up and asked if he could buy me a drink. I agreed of course, since by that point my body had already decided that it wanted to experience his dick up close and personally. I gave him a wink and asked him to make sure the drink was virgin.

“My rugged new suitor made a show of looking me up and down, and told me that he liked seeing a pretty young thing like me using my body for what it was designed for. Let me tell you, Derek, that got my slutty pussy’s attention immediately. I know that we’re kind of becoming a thing now, and I honestly did feel a little bit guilty for cheating on you initially, but I really couldn’t help it, and at this point I honestly don’t care anymore. I just kept thinking about his cock, how desperate I was for it, how easily I could make it fill me up with his cum…”

“Anyway, after a little flirting and a lot of him staring at my tits I couldn’t take it anymore. I ‘accidentally’ let one of my nips slip out and asked him if he liked what he saw. He nodded, so I put a hand on his knee and asked if he wanted to try me out and he said that yeah, he wouldn’t mind taking me for a ride.

“So, Derek, I went to his place and I fucked him. I rode his cock bareback and let him squeeze the big, swollen tits you gave me until he gave my slutty pussy exactly what it needed. He came inside me just like I knew he would, just like you did, Derek. I’m still full of his cum right now; I can almost feel it trying to wriggle its way into my womb and knock me up. You boys are such horndogs, and I can’t help but love it.”

The entire time she was speaking Derek was getting angrier and angrier, and when she finally finished, he exploded. “Michelle, I can’t believe you’d do that to me!”

“Well it’s not like I can help it, Derek,” she said matter-of-factly. “You’re the one who gave me this slutty pussy, after all.”

Once again Derek’s head snapped back in cold realization. That was true, of course. He’d even said that he wanted Michelle desperate for cock, pursuing the first cock she found. He’d never expected her to actually do it, though! Apparently he needed to be a bit more careful about what he said around her, especially with the Perfect Girlfriend Juice still saturating her plump, fuckable body.

Michelle broke into his reverie. “Still,” she said ingratiatingly as she wrapped her arms around him, “it’s not like you have anything to worry about, big guy. No matter how much cum happens to find its way into my slutty pussy, I’m stuck with your genes inside me until I pop.”

That’s true, Derek thought to himself, and an odd feeling of sexually-charged pride rose inside him. That was his offspring bulging out Michelle’s torso, his seed that had knocked her up and given her her new mommy curves (with a little bit of help from the Perfect Girlfriend Juice). It didn’t matter if a hundred different guys filled her slutty pussy with their cum trying to get her pregnant, because he’d gotten there first and claimed her womb as his own. He noticed that he was getting hard again. Why was all of this so damn hot?

He decided to roll with it, and wrapped his own arms around Michelle’s soft body. “That’s right—how does it feel to know that no other guy can knock you up until you give birth, no matter how many times they fuck you?”

“I’m pretty indifferent to it, actually,” she shot back, stroking his stiffening member through his pants, already craving a fresh load of cum in her insatiable pussy. “But once I do pop, once my womb is all empty and free and fertile again, I’m afraid I can’t promise anything. The first stud willing to stick his cock in my slutty pussy gets to breed me, and with what I’ve seen of how horny you men are, how eager you all are to fill my slutty pussy with your little swimmers, that probably won’t take very long.”

Once again, something about her words got Derek going, something about the fact that Michelle’s pussy was so slutty that she had no choice but to let herself get knocked up by the first cock she ran into just made him so horny he could’t stand it.

“Did you at least get his name?” he asked, pulling her tight against him and groping her swollen milkbags.

Michelle stared petulantly up into his face. She could feel his rock-hard cum-syringe throbbing against the growing bump it had given her. “Nope.”

She had to hold back a giggle as Derek immediately dragged her to the bedroom and added his own sperm to the millions of others impotently trying to knock up her already pregnant womb.

After a few minutes of rough, delicious fucking, they lay together in the afterglow.

“Michelle, do you like my cock more than that other guy’s?”

“Not at all.”

God that was so hot, Derek thought to himself. Michelle was so slutty, and he was the one who had made her that way.

“If you want to fuck other guys so badly, why do you stay with me?” he asked, half-fearing the answer, but the implications of the question were so incredibly arousing that he couldn’t help himself.

“Because I’m carrying your child. I’m compelled to stay here so that you can take care of me and our offspring. For now at least. If someone else knocks my slutty pussy up next, I might jump ship. Especially if he has a bigger dick,” she added thoughtfully.

“I’ll just have to make sure I keep you satisfied then,” he said, rolling over back on top of her and sliding his hardening dick back into her soaked pussy for round two.

Michelle sighed with the satisfaction of feeling her slutty slit filled once again with the cock it craved, but then she cocked an eyebrow up at her impregnator. “Derek, I like you well enough, but no matter how much I like you, you’re nowhere near man enough to satisfy me permanently. Not with the slutty pussy you gave me.”

Derek grunted and increased his speed. “I guess I’ll just have to get to you first after you pop then.”

He glanced down at her bump again, loving how he had claimed her, loving how her body advertised his virility, and then added a third load to the baby batter oozing out of Michelle’s knocked-up pussy.

Part 8

The next few months passed uneventfully. Michelle’s body continued to swell with her pregnancy and Derek continued to fuck her every chance he got.

Every few days, of course, the cravings of Michelle’s slutty pussy would get to be too much for her, and she’d go off in search of a stranger’s cock to plow some fresh seed into her slutty pussy.

Derek learned not to hold her infidelity against her—it was his fault, after all, and if anything it only made him that much more ravenous himself the next time he fucked his pregnant girlfriend’s promiscuous body.

Things were going so well that they’d even announced their relationship at work, once Michelle started to show enough that she wouldn’t be able to keep her condition a secret any longer anyway.

Their boss had noticed that they had been getting along better recently, and had been pleased with himself at how well his plan had worked, but he’d never imagined that trapping the mortal enemies in the same room with each other and forcing them to hash out their differences would lead to them fucking! Now he’d have to plan for two of his best workers being out on parental leave at the same time. I guess hate really is the closest emotion to love.

One evening as Derek was using Michelle’s body, enjoying the swollen curves of her pregnancy, he carelessly exclaimed “I wish you could stay pregnant forever!” as he thrust himself into her greedy, slutty pussy.

Michelle stiffened in surprise as she felt the familiar sensation of the Juice surging inside her again after months of relative inactivity. She’d honestly thought that it had worn off, but now that she’d finally gotten some more useful info about Derek’s Perfect Girlfriend, the Juice was back with a vengeance, and the curvy, knocked-up slut knew that she was about to change yet again. This time, however, she couldn’t wait.

Even so, she remembered what had happened the last time she made assumptions about Derek’s preferences, and decided to ask for more clarity. The trick, of course, was doing so without alerting Derek to the fact that he’d inadvertently triggered the Juice. Still, with how mindless he got when pursuing his masculine urge to cum inside her, she didn’t think it would prove much of a problem.

She moaned and squeezed her big, milky tits in Derek’s face, grinning to herself at how easy he was to manipulate as his eyes locked onto the small drops that began to leak out.

“Yeah, you like me all big and swollen with your seed like this, don’t you, my big, horny man?”

“Oh God yes!” he groaned.

She jiggled her tits at him, and Derek kept thrusting into her slutty pussy. God she loved that sensation—there wasn’t enough cock in the entire world to satisfy her. “Didn’t you love knocking me up too though? Even though you didn’t know that’s what you were doing, you seemed to really enjoy it.”

Derek grinned, taking her words for dirty talk as he continued to squeeze himself into her and grope her leaky boobs. He was getting close.

“Yeah, you’re right. I did enjoy knocking you up, more than I thought I would, and I can’t deny that I love the idea of doing it to you again. I guess I couldn’t do that if you were always pregnant.”

“Then again,” the pregnant slut purred, both to fish for more info and to stroke her man’s breeding kink one more time, “my pussy’s so slutty that I might not be able to keep someone else from cucking you in the meantime.”

“Ungh,” Derek groaned as his cock swelled inside her. The thought of his pregnant girlfriend’s pussy being so slutty that she couldn’t prevent herself from getting knocked up by a random guy on the street was too hot for him to handle, and the way that she was being so casual about it was even hotter. He felt himself losing control and slammed his dick into Michelle one last time so it could start pumping her full.

Words poured out of his mouth. “Then I’ll just have to make sure that my cum knocks you up before anyone else’s can. At least in the meantime you’re stuck with my seed until you give birth.” Michelle felt the Juice pulse inside her body again as he spoke.

Derek felt his own juice pulsing inside his balls, and then came the glorious sensation of his dick filling Michelle up. Derek’s mouth kept pumping alongside his cock, heedless of the effect his word-spurts would have on her body now, just as he’d been heedless of the effect his cum-spurts would have on her pregnable body so many months ago. “And if I claim you again—ngh—before any other horny guy—unh—even gets a chance...” His orgasm was weakening, but he was giving Michelle plenty of what she wanted, in both relevant senses of the word. He gave one final moan and looked down into her cum-enraptured face as he continued with the apodosis. “You’ll be stuck with my genes inside you. I’ll keep you perpetually pregnant with my offspring until I get tired of you.”

Derek finally collapsed on top of Michelle, spent and exhausted.

Michelle smiled to herself in satisfaction. She’d played her part to perfection: her slutty pussy had gotten what it wanted once more, and last piece of the puzzle had just clicked into place inside her mind. She lay back and enjoyed the sticky sensation of being full of her man’s virile cum, and allowed Perfect Girlfriend Juice to send its waves of transformative influence surging through her once more.

As she changed, and as her body succumbed to multiple persuasive influences simultaneously, she thought about just how badly she had wanted it to be some random guy who knocked her up next. The fact that Derek was still lying on top of her as she contemplated her adulterous urges didn’t bother her at all; somehow, she felt completely sure that ultimately Derek would be the one to claim her again anyway.

Eventually the day came. Derek was in the delivery room as the fruit of his loins crowned and squeezed its way out of Michelle’s swollen body in much the same way that his swollen cock had squeezed itself in and carelessly spurted his DNA into her so many months ago.

Derek had had the forethought to tell Michelle that his breedslut Perfect Girlfriend needed a supernaturally elastic and resilient torso, cervix, and vagina for all the babies she was going to get pumped into her, and so the birth was quick and painless. In fact, during the delivery Derek could already see the skin of Michelle’s abdomen tightening back into a nubile, breedable waist once again.

As soon as it was over, the doctors swept out with their bundle of joy so that the new parents could “rest”. Michelle, however, had already gone two full days without cock, and by this point she was nearly out of her mind with her need to take a load right in that slutty pussy of hers, and Derek’s cock was already rock-hard at the thought of stretching Michelle’s fertile pussy open again.

Not to mention he knew that he needed to breed Michelle as soon as he could before she had a chance to go behind his back and tempt some other guy into knocking her up. He didn’t even want to leave her alone in the hospital on the off chance that the sight of her swollen breasts and thick hips might get to one of the doctors in a moment of weakness and trigger an urge to spread his seed.

It didn’t help that by this point Michelle had seducing men down to an art: it would only take a minute for her body and flirtations to convince him to cum inside her, and then it would be too late. Thanks to Perfect Girlfriend Juice Michelle’s womb would already be bursting with fertility, more than ready to yield to another man’s sperm, and Derek would have to wait nine more months before he could knock his slut up again, knowing the entire time that he’d let another man get to her first.

As he climbed onto his girlfriend while she begged for his cock, however, Derek noticed that her abdomen wasn’t as thin and tight as he’d expected it to be. He slid his cock inside, shivering with the pleasure of it—it was amazing how fucking Michelle never got old—before mentioning what he’d noticed to her.

“I guess what I said the other day about your torso being elastic didn’t work—you’ve still got a pretty noticeable postpartum bump.”

Michelle cocked a sly eyebrow at her man. “It’s not a postpartum bump—I’m just pregnant again.”

Derek’s eyes flew open with shock at the bomb that Michelle had so casually dropped, and his dick twitched inside her tight, slutty pussy with sudden interest. “What?!? How??”

“The doctors don’t know—they noticed it a month or so ago during an ultrasound. They’ve never seen anything like it. They say I’m about sixteen weeks along.”

“Michelle, how is that possible?” Derek’s pace began to pick up inside her—the thought that his breedslut was so fertile that she’d somehow managed to get herself knocked up while she was already pregnant added a whole new level of excitement to his arousal.

“Honestly, I expected this to happen. Or, something like it, at least.” She took a second to appreciate the sensation of Derek’s cock squeezing itself through her tight canal. There wasn’t enough cock to satisfy her in the entire world. “Remember like four months back when you said you wanted me to be pregnant forever, and also wanted to be able to knock me up again? Well, it seems like the Juice did its work and made that a reality. I can be knocked up again and stay pregnant perpetually, just like you wanted.”

That thought was so arousing that Derek was already on the verge of cumming, but a sudden realization stopped him in mid-thrust as though he’d been doused with a bucket of cold water.

“Wait, you were cheating on me like every other day by that point! What if it’s one of theirs and not mine!?” As hot as it was to think that Michelle’s pussy was so slutty that she couldn’t resist being knocked up by other guys, Derek didn’t actually want her to get knocked up by anyone else. He wanted to be the only one who got to enjoy mingling his genes with hers, over and over again.

“Could be!” Michelle responded with a cruel grin, working her torso to make sure that Derek’s cock still got plenty of sensation even though he’d stopped thrusting. She laughed at the look of pleasure mingled with horror on his face. “I’m just fucking with you Derek—I’m pretty sure that’s taken care of too. You also mentioned wanting me to be stuck with your seed until I give birth, though I’m pretty sure you don’t remember that with all of the verbal diarrhea you were spewing that night. In any case, I’m pretty sure that you’re the only one who can knock me up again while I’m still pregnant.”

She looked up at him naughtily. “If you don’t knock me up again, though, I’m pretty sure that by this point I’ve completely lost the ability to keep my slutty pussy under control.”

All of this was more than Derek could take with the way Michelle’s tight pussy was squeezing and stroking him there in the hospital bed. As Michelle watched Derek’s eyes narrow with the same intense expression she’d seen on his face hundreds of times before, she couldn’t help but needle him one final time.

“Careful Derek,” she said, eyes glittering greedily. “We don’t know when my slutty pussy gets fertile now! If you cum in me, you might knock me up for a third time!”

Derek was already long past the point of no return, but the mental image of forcing his breedslut’s sexy bump and full, leaking tits to swell even larger took the intensity of his impending orgasm to a whole new level. His cock jerked, spewing his semen out into Michelle’s impregnated-yet-fertile body, and she moaned in relief at finally having cum back in her slutty pussy after such a long hiatus.

As the enemies-turned-lovers both got off to the thought of Derek’s seed soaking into her womb and knocking her up with the next of an endless string of his offspring, they reflected that, ultimately, things had turned out pretty well between them. Michelle had ultimately won the promotion, proving her superiority once and for all, but Derek had gained a sexy, promiscuous boss in the process: one who who was desperate for him to use her as his own personal baby factory for as long as he felt the urge.

And so, over the following years Derek kept pumping her slutty pussy full of his cum, Michelle’s constantly swollen body kept pumping out his kids, and they both lived happily ever after.