Fetish

Girlfriend Expands My Penis in Part 3

Uncontrollable growth has consequences for GF.

Spankmasters
Jun 1, 2024
16 min read
mild bondageGirlfriend Stretches My Cock Pt. 03cuckcock growthrevengetitfuckforced cumintimatebreast expansionbdsmexpansion
Girlfriend Stretches My Cock Pt. 03
Girlfriend Stretches My Cock Pt. 03

Girlfriend Expands My Penis in Part 3

Cal's mouth was wide open. He couldn't believe the words coming from Kiera's mouth, the way she was acting. She'd always been so shy and reserved, never wanting to make decisions in the group or really make herself known at all. He'd always thought that ridiculous, but Kiera was simply stunning, and her figure and accompanying bust made it impossible not to notice her.

But this confident, seductive, and even dominant side of her Cal had never imagined. Now he was experiencing it firsthand, and he could see a bright future with her. Time seemed to slow down for Cal as his mind drifted to the possibilities of day turning into night where he and Kiera never left the bedroom for more than hydration breaks. He pictured kissing every square inch of her pale skin; starting at her neck with his warm breath against her throat, and slowly working his way down to her breasts. He imagined the ghost of a smile spreading on his face as he imagined spending a long time kneading her massive chest, teasing her nipples with his tongue, feeling her tremble against his touch. Teasing her as he kissed his way down her navel, running his hands up her inner thigh-

"Cal?" Kiera asked, bringing him back to reality. She stood over him, his dick still in her hand, barely covering more than the head. "You seem to like my idea a lot!"

He was oozing pre-cum into her hand. Just the thought of teasing Kiera made him desire her so much. After years of barely any sex at all with Charlotte, he was keen to make up for lost time.

The thought of Charlotte brought Cal fully to his senses, a bitterness infecting his heart. He looked at her and really took in her appearance for the first time since Kiera had made love to him. Charlotte's mascara was still smeared down her face, the ghosts of tears etched in lines down her cheeks from when she was choking on his growing member. She was sitting with her back to the wall, her shapely, athletic legs partially visible under the swollen masses attached to her chest. She'd gone from a B cup to... well, beyond all the letters in the alphabet and then some! Charlotte could simply tilt her head down slightly and her chin would be resting on the top of her massive tits.

Charlotte noticed the bitterness in Cal's expression and squirmed, sending ripples through her extended breasts. She gave up any attempts to move again; her enormous tits must weigh more than she does, but it took several seconds before her breasts stopped swaying.

"Yes," Cal declared, "she made me this way, she deserves to be humiliated for it."

"Cal... Cal no," Charlotte said in a small voice, panic starting to show on her face a little. "I had to watch you fuck my best friend - my best friend. My breasts are bigger than exercise balls - I'm a freak, I'll never be able to hide from this. Isn't that enough?"

"Don't listen to her, Cal." Kiera intervened before he could respond. "I've heard her complain about you almost every week for the past few years. 'Oh, he's obsessed with sex. Oh, it's just so much effort to get him off, can't he just cum quickly for once so I can watch a movie.' She never took care of you. She took you for granted - I noticed the things you did for her, all the things she never appreciated."

Cal's mind flashed back to the painful nights when his balls felt bluer than ever. He'd treated Charlotte in every way imaginable, but when it came to intimacy he'd hoped would come in return, he'd felt tortured to lay next to her in bed each night without being able to touch her. Her body was truly incredible, just spooning Charlotte meant that his cock was constantly reminded of how big and "peachy" her ass was. His advances were always rejected. He always felt rejected.

But there was one memory above all that made Cal approach Charlotte and prepare to dominate her new unbelievably large breasts.

It had been a long dry spell one summer, and Charlotte had been wearing a series of short sundresses that clung to her curvy body and, as always, highlighted her shapely ass and legs. He remembered how the sunlight would glisten on her sweat-covered skin. He remembered the bounce of her ass when they played in the woods. He remembered the arch of her back when he hit her with a water balloon, the cold water making her seize up and her nipples immediately go hard. It was all one several-weeks-long tease.

One night close to the end of this spell, Cal craved a kind of freedom. He felt like a slight touch would cause him to explode, something he shared with Charlotte as they got ready for bed, though she simply laughed and flopped over. Shortly, Charlotte became too hot, the fan and open windows not enough to chill the room. So, she did something she wouldn't usually do - she threw everything off. First, she yanked her silk top over her head, then unclasped her bra, tossing them both aside as her small breasts wobbled from the maneuver. After, she wriggled away from her tiny pajama shorts. Cal had viewed this in the dim light, his breath caught in his throat. He breathed more heavily moments later when she got rid of her lacy underwear too. She was totally nude, mere centimeters from him, donning only a thin pair of boxers.

Cal recalled the intense desire he had prior to sleeping that night - it was primarily from struggling to suppress his need for Charlotte's touch for what felt like hours. He had been clenching the sheets so hard his knuckles were white, while he fought to not clutch Charlotte's perky breasts, barely visible in moonlight. Despite his efforts, he had managed to drift off.

He didn't sleep for long that night. The endless stimulation and absence of release had proven excess. He had a wet dream about covering Charlotte in cum instead of water from a super-soaker during their balloon fight. Awakening abruptly, his heart thumping and covered in perspiration, he had gained consciousness just as he was nearing climax and barely managed to prevent exploding in his boxers. He had held his breath, clenched his eyes shut, and tensed all of his muscles to avoid erupting.

After what felt like countless minutes, he realized something was amiss. As his erect penis continued thrashing desperately for him to ejaculate, it was evident it wasn't enclosed by the cotton cushion of his boxers. He raised his eyelids, observing his penis aimed at one of Charlotte's flawless ass cheeks as she faced away from him, snuggled up behind him. His peerless rump provided a perfect cushion for his rigid cock, but was still firm from years of exercise.

Cal had to double his efforts to abstain from climaxing, his breath overly rapid and frantic as he bit into his fingertips - the sensation of being at the brink still at the forefront of his mind. He knew Charlotte would get enraged if awakened by Cal ejaculating on her ass. However, Charlotte shifted, prone to find out what was happening. But she was unaware of the implications.

As Charlotte initially repositioned, the head of Cal's ultra-sensitive dick was sandwiched by her thighs and tight behind, and Cal watched with astonishment as her movement shifted the majority of his member - he felt an unexpected breeze on the tip protruding from the other side of her legs, an inconceivable pleasure enveloping him from the pressure on his shaft being concealed.

"Don't move!" was the only thing Cal uttered. Charlotte was puzzled by his demand, and shifted a bit on her bent arm to see what he was absorbed in. This slight forward motion moved Cal's penis back and forth. In his hesitant state, this was a spark that set off a huge fireworks display.

"Cal!" she gasped, realizing what was afoot. "Don't you dare. Do. Not. Cum. Right now - I mean it!" she commanded. Unfortunately for him, the instruction only further aroused Cal. The forbidden act was alluring, making it even more challenging to restrain; Cal could sense the warmth between Charlotte's thighs pressing against his turgid erection, the sight of her beautiful body and delectable buttocks was too alluring.

Charlotte exclaimed, "No way!" Her words were tough, filled with venom. She squeezed her legs together tightly and pressed her behind powerfully. She squeezed incredibly hard. She observed the disbelief on Cal's face and realized the increased pressure would push him over the edge, so with a snarl, she took action.

Due to years of gym training, many years of hip thrusting twice as much as her weight, and years of doing split squats that left her unable to walk, an impressive strength engulfed Cal.

Cal was overwhelmed by a sudden change in an instant. A moment of incredible pleasure as the initial pressure sent a sensation through him, causing his member to pulse and start pumping cum up his long shaft - immediately replaced by pain he'd never experienced in his life as his bucking cock was compressed between Charlotte's thighs and rear end. He just reached climax when it happened, the first powerful squirt of cum was halfway up his shaft.

His shaft and insides burned as his cum was stopped from leaving, although his ducts strove relentlessly to keep pumping cum up his shaft in spite of the block. At that moment, Cal felt the excruciating agony of his cock being compressed, and at the same time, his inside shaft was torched as the pressure increased.

Cal shouted instead. He screamed out Charlotte's name, even slightly pressed towards her backside, but Charlotte just clenched down harder, harnessing the full intensity of her significant strength to make sure she wouldn't be splashed with cum - her pain was more important to her than being covered in his cum at that moment in her thoughts. The amplified force brought tears to Cal's eyes as he thrusted his pelvis forward as if it would alleviate him, but he was trapped between Charlotte's thighs as each pulse of cum attempting to leave his body met the obstructed member and burned from the inside.

After the spurts of attempted ejaculation subsided, Cal just remained there, slightly quaking, as Charlotte faintly lifted her hips to release his semisoft penis. She carefully moved her hips backward to free him and laid down to face him directly. Suddenly, he shouted out again.

"This," Charlotte said, she suddenly grabbed Cal's aching cock firmly in one hand. "is totally unsuitable. Murray can only experience GASM when I declare SO." she said, squeezing more forcefully with every other syllable, intensifying the pain piercing through Cal's entire body.

"Got it?!" she said, squeezing from the base of Murray's already crushed penis and pulling upward with deliberate force. A long, sticky line of semen oozed out of the tip, smearing her fingers. Fortunately, she let go of him and headed to the washroom to clean her mitts, leaving Murray alone in bed shaking slightly and holding his damaged member, a minuscule pool of cum forming in his hand.

At present, Murray perceived comprehension in Charlotte's eyes. They knew they were recalling that night, and the grueling week Murray spent recovering.

Charlotte gulped, shivered while Kiera drew nearer and began rubbing Murray's overabundant cum into her cleavage. Kiera pushed her entire arm into Charlotte's profundity, still not quite reaching the bottom. She whispered only for Charlotte to hear.

"I'm going to command him to ravish these colossal breasts of yours. I'm going to coerce him to drench you in more cum than you can imagine. Then, we'll abandon you here and forget all about you."

Charlotte might only glare at Kiera. Her best friend just one hour ago, and now her worse enemy worldwide. She humiliated her. She fucked her boyfriend directly in front of her, enduring the entire length of the massive penis she stretched, cumshot and all. Kiera smiled malignantly, identifying the fury in Charlotte's eyes.

"Don't worry," Kiera added, "I'll treat him well for you." She moved to Charlotte's unoccupied ear and continued to taunt her.

"I'll screw him like you never could. I'll make him experience feelings he's only fantasized. I'll suck him dry like you always avoided... And love, by the time I'm done, I'll have reached orgasm at least a thousand times while riding his HUGELY ENORMOUS penis." Kiera closed, leaning towards Charlotte for a kiss on the cheek before withdrawing. "She's prepared for you, Murray."

Murray didn't need to bow, he merely bent his hips and directed the tip of his astonishingly elongated rod downwards towards Charlotte's breasts. His tip encountered the pliant, soft tissue of her breasts, firm enough to provide pressure. He pressed harder, sinking deeper into the space between each comically large breast. He exhaled audibly, astonished by the astonishing sensation.

He had encountered handjobs, blowjobs, and even enjoyed unbelievable sex that had him dazed. Yet, this was a sensation he hadn't known he desired to experience. His veiny member was being massaged by supple breast tissue as he extended deeper into the gulf between his two massive breasts. Next to him, Kiera used both arms to push and pull Charlotte's ample bosom apart, allowing Murray inside.

Finally, the suggestion of Cal's penis hit the firmness of Charlotte's ribcage. His size was so significant that he still had several inches untouched. Kiera observed this as well.

"Oh.. We can't have that now, can we?" she expressed with a mischievous grin. Gripping the gem at her necklace with one hand and the uncovered section of Cal's member not currently captured between Charlotte's exercise ball-sized breasts, Kiera unleashed a wave of magic.

Cal detected a warm, tingly feeling spread from Kiera's grip, through the titan between his legs, and into the chest region around him. As he commenced thrusting in and out, he recognized he had less and less shaft to manage outside.

Kiera was enlarging Charlotte's chest even more.

"Hmm, considerably better." Kiera hummed into Cal's ear, her warm exhale instigating chills down his spine. Kiera began to nibble at his lobe, moaning softly and murmuring sweet nothings about how she couldn't wait to experience him inside her once again.

Cal found himself engulfed in the ecstasy of the most remarkable titfuck he had ever imagined, and the enchanting voice whispering in his ear. He gazed down to perceive Charlotte sobbing once more; she wasn't gazing at her expanding mammaries, but instead at Cal and Kiera intertwined in each other. Cal's mind returned to the notion of his constricted penis when he looked into Charlotte's eyes, exhibiting no regret.

Yet, he did sense a twinge of discomfort in his swollen appendage a brief while later. He had felt exorbitant pleasure merely a moment ago, even starting to approach what would invariably be yet another shatteringly orgasmic blast, but now he was diverted by the unbearable sensation of... of extending.

"No.." Cal moaned. He saw a violet glow near the ground, largely concealed by an expanding chest. Charlotte was now beaming, and Cal realized with fear that she was holding the gem - Kiera must have dropped it after transmitting what she thought was the final measure of magic she would call for.

"I will grow," Charlotte stated with a sly smile, "but you will grow with me. And it will be the most delightful and unbearable experience of your life."

Kiera attempted to grab the gem, but a wave of Charlotte's wrist resulted in Kiera being propelled backward, latched to the wall in mid-air. "Ah-ah-ah, now it's my time for retribution, slut."

Cal gazed from Kiera, pinned to the wall with traces of his last discharge still trickling down her legs, to Charlotte and her twisted grin in front of him. He endeavored to withdraw, yet with another wave of her wrist, Charlotte educated her breasts to come together with unnerving pressure. Cal groaned in pain, struggling to wrap his fingers around his aching cock but finding Charlotte's gracious breasts acting as an obstacle.

"What's the problem, Cal?" Charlotte enjoyed, rendering her magnified tits move up and down along Cal's shaft. The pain was severe, but so was the delight. Cal was undergoing a flurry of experiences simultaneously, the bittersweetness of the most monumental and firm titfuck of his life, and the irrevocable pain from the pressure. He gritted his teeth, trying not to provide her the satisfaction.

Charlotte quickened the tempo, her breasts billowing wildly as they struck down on Cal's overwhelmed member.

"Speed it up?" she mocked, licking her lips. "Perfect, but wait, you desired me to be grotesque, right?" And with a flourish of the gem, her breasts became uncontrollable in growth, now transcending the depth of her unconfined legs on the ground. In the same movement, Cal sensed his agonized shaft being stretched past its limit; the same feeling he experienced when Charlotte had swallowed it before returning, a slight degree of pain and untold quantities of pleasure.

He didn't desire to. He didn't desire this. But he comprehended the ominous foretelling was concluding. Kiera, still powerless pinned to the wall, could detect it as well.

"It's okay, Cal." she whispered tenderly, gazing at both Charlotte's breasts and the length of Cal's monstrous length expanding to what was presumably numerous feet. "Just do it. Accept it before she renders you any more massive."

It was all Cal was able to nod in Kiera's direction, before altering his perspective back towards Charlotte. He couldn't perceive Charlotte's countenance, just a mass of tit flesh, but he could feel the tip of his unfathomably mammoth shaft delving beneath the Mammoth tissue incessantly.

It was a blitz of semen. A deluge of hot, sticky liquid erupting from him until he felt empty inside. It covered every square inch of the tireless titplay that refused to relent, dripping down Charlotte's underboob. The fountain at the tip gushed the floor, sending a geyser of white liquid into the air, drenching her silken brunette locks in white instead of her natural dark brown.

Charlotte's head bounced back and she gasped as the thrusting penis drove its way into her mouth. Despite her efforts, she couldn't shake it loose because her own heavy tits pinned her arms to the nearby wall. More cum gushed into her mouth, coming so fast she had to swallow as much as she could to avoid choking – something she was tired of.

The steady flow of sticky seed kept pulsing, faster than Charlotte could swallow. Her cheeks ballooned, cum dripping and shooting from her lips, then squirting out her nose from the pressure. She tried to move her hand holding the gem, but her bulky breasts pressed against her, leaving no way for her to get closer. Instead, Kiera was released from the wall.

Kiera lunged toward Cal. He was trembling violently from the intense orgasm, obviously sagging under the magical enhancement. He reached out to grab Kiera for support as his legs gave out, held up only by his pulsing dick trapped between the massive breasts still pounding into him.

"STOP," he gasped between breaths. He was almost finished with his huge orgasm, but the relentless titfuck continued – post-orgasm torture too much to handle.

Kiera struggled to get under or around the immense tits, but their bulkiness made it difficult to make any real progress. She began grabbing clumps of breast flesh and trying to climb over them. It was tougher than she imagined; Charlotte's massive tits flexed with every movement.

Finally, Kiera reached Charlotte's torso and stared in horror. Charlotte's body was draped in cum, soaked before Cal's penis had even entered her mouth; the load shot out covering her skin. And it seems the torrent hadn't ended there; Charlotte's cheeks were bulging, mouth full of cum, while her belly was stretching and straining from the semen pouring into her stomach.

"H-..H-.. Oh my god... K-Kiera, hurry! I'm so close, fuck.. It's torture, h-hurry!" Cal shouted, his voice weak.

Kiera wasn't fond of Charlotte at all, but no one deserved "that" kind of end. She and Cal had a future, but Charlotte needed one too. Kiera understood how to reach the crystal pinned to the wall just a hand-length away.

She kept her focus and drew the magic in, causing Charlotte's breasts to shrink slightly. Kiera pushed past the huge boobs, snatching the crystal and tossing it aside.

Now it was much easier to move, Cal pulled back and he was able to draw out of Charlotte's mouth and chest, the slippery cum acting as perfect lubrication. Kiera froze in shock as a massive amount of cum escaped from Charlotte's mouth, her stomach deflating and her body going limp.

Kiera dashed back to Cal. He was panting furiously and biting his knuckles.

"I was..." he gasped, unable to speak intelligently between frantic breaths. Memories of "that night" resurfaced, humiliation overtaking his mind as he fought to both hold back and recall the way he was treated.

Suddenly, he felt his huge phallus guided up and around, Kiera positioning herself next to him and wrapping her 28J tits around the last foot of his shaft. As he watched, his appendage grew, her tits also expanding in her hands, filling her fingers. He realized then that Kiera had used some of the growth magic on herself –

"It's alright, Cal," Kiera said soothingly, her plump breasts stretching in her fingers. She leaned down and softly kissed the tip of his cock.

In that instant, he realized it. Kiera, one of his previous loves, had once withheld his orgasm, crushing him with her iron thighs. But this love, this love allowed him release, let him experience it in its fullest. He knew this was love.

Kiera traced her tongue around the head of his cock, then expertly slid her soft, expanded breasts up and down on the rest of his erection. He had little sperm left, but she swallowed his seed so fast her eyes teared. She kept frictionlessly rubbing his shaft with her enlarging breasts until he was completely spent. And he knew.

He knew that this was true love. After having one lover deny him release, he'd experienced a totally different kind of love – encouraging and supporting his pleasure.

Him and Kiera were destined to be together.

As he relaxed, he gazed into Kiera's mesmerizing blue eyes. Her luscious lips were lovingly wrapped around the tip of his length, softly kissing and massaging it after he had finished climaxing. Slowly, she moved her ample chest up and down his erection, massaging it as she withdrew from him. She smiled as a small drip of leftover semen escaped from her mouth.

This beautiful woman was perfect for him.

***Epilogue***

A few days later, following numerous failed attempts at magical adjustments, Cal's member remained unnaturally large. While it was no longer multiple feet in length, his penis measured an impressive one and a half feet in length. He was content with this new size, considering that his girlfriend Kiera could effectively handle it with the assistance of a magical gem.

Kiera's breasts had ballooned in size after absorbing so much magic but they were thankfully reduced in size back to a more "normal" measurement. However, she would need to have all her bras custom made as there wasn't a store that sold 28T cup bras on the market. Kiera admitted that her new bosom was useful when it came to giving her lover the most awe-inspiring titfuck.

How did they manage it? Only Cal, Kiera, and one other individual are in the know. The third party resides in a space with massive doors, and a camera in the corner capturing her every move so she can run a lucrative business showcasing her over-sized breasts to a wide online audience. They believe it to be a well-executed performance and CGI, oblivious to the fact that her massive orbs were created by the abuse of magic and a high cost.

Nights often find this third individual lying awake in bed, shedding tears at the thought of her now-smeared physical attributes, which she acquired as a result of her ex-lover and friend's transferral of magic. She knew they were leading their lives, enjoying their lovemaking adventures.

She was painfully aware of their joy, a torment that would haunt her forever.

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