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Synthetic Heart

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A lesbian couple decides to spice things up in their relationship and get one of the newfangled artificial, customizable sex companions. Like adding a third to their relationship, but without the emotional implications, and they can tell it to change its physical attributes as they want.

Chapter 40: The Unmaking of Elena

The silence after Elena’s command was profound, broken only by the wet, ragged sound of their breathing. They were frozen, a grotesque sculpture of flesh and synthetic extension, pinned in place by the monstrous scale of their violation.

Margot’s mind raced, a frantic, detached observer in a body screaming with sensation.Twelve inches. She was filled with a solid foot of cock, a truth so blunt and physical it short-circuited every thought that wasn’t full, full, so fucking full. Her cunt, stretched and throbbing, had ceased to be a separate part of her.It was simply the warm, slick socket holding this impossible thing.

Elena was worse.

The colossal shaft in her cunt was a disturbing presence, a living anatomy lesson pushing her belly into a taut, rounded curve. Margot could see the faint outline of it when Elena shifted, a low moan scraping from her throat. The other one, in her ass, was a thick, unforgiving pillar anchoring her in a state of brutal openness.

Elena’s eyes were glazed, her face slick with sweat and tears of overwhelming sensation. But the feverish triumph was still there, burning through the overload.She looked at Margot, her gaze distant yet fiercely possessive.

“Can you feel it?” Elena whispered, her voice hoarse. She rocked her hips a fraction, a tiny, grinding movement.The effect was seismic.

Inside Margot, the twelve-inch cock shifted, a deep, internal drag that scraped every sensitive nerve ending. She cried out, a sharp, involuntary sound.

Inside Elena, the two enormous cocks moved against each other, separated only by a thin wall of straining tissue.Elena’s breath hitched, her eyes rolling back slightly. “Oh, god… I can feel them… rubbing…” she gasped. “Fuck… Margot… look at what we made.”

We.The word echoed in the charged air. Margot’s pragmatism fought to surface.They hadn’t made this.They’d ordered it.Programmed it. This was a clinical output, a response to a depraved input. But her body, humming and clutching around the massive invasion, didn’t give a fuck about semantics.

“I can’t…” Margot started, her own voice strained. “Elena, this is… it’s too much.”

“It’s perfect,” Elena breathed, a shiver running through her. “It’s the only thing that’s real anymore.” Her hands tightened on Margot’s hips, nails digging crescents into the skin.“Move.Please. Move with me.”

It was a plea, raw and desperate.The curator begging the sculpture to animate itself.

A strange, protective ache pierced through Margot’s haze of arousal. This was her Elena, her romantic, beautiful lover, reduced to a quivering vessel begging for more brutal fullness. The sight unraveled something deep in Margot’s chest.She nodded, a tiny, helpless movement.She tried. She lifted her hips slightly, an agonizing effort against the weight and girth inside her. The cock dragged along her inner walls, a slow, fiery slide that made her whimper. She sank back down, taking it all, the head pressing a stark, undeniable pressure against her cervix.

Elena mirrored her, a slow, synchronized grind. Their foreheads touched, their breath mingling—panting, pained, shared.It wasn’t passionate.It was grueling. A mutual endurance test, a shared wound they were probing.

“Fuck,” Elena hissed, her movement becoming slightly more urgent. “Fuck, it’s… it’s hitting something… deep.” She ground down harder, her body accepting the brutal stretch, seeking a new kind of friction from the sheer, unmovable size. “Yes… right there… there.”

Margot followed, her own rhythm becoming more defined.The initial shock was melting into a perverse, heavy pleasure. Her body was adapting, her cunt learning to clench around the monumental girth, finding spots of shocking sensitivity along its veined length. Each drop of her hips sent a jolt through her, a deep, full feeling that bordered on pain but veered violently into pleasure.

Each drop of her hips sent a jolt through her, a deep, full feeling that bordered on pain but veered violently into pleasure. They found a terrible, grinding rhythm, their bodies slick and shuddering, a feverish communion of strain. Margot’s fingers dug into Elena’s back, feeling the powerful flex of muscles working to accommodate the impossible.

“Just like that,” Elena panted, her lips wet against Margot’s throat.“Don’t stop. You feel so… fucking… deep.”

Margot could only gasp in reply, her world narrowed to the relentless stretch and the frantic light in Elena’s eyes. Then, without warning, the cock inside her pulsed. It was a subtle, internal shift, a hardening that suddenly became an insistent, expanding pressure. It swelled, another half-inch of girth, forcing her already-strained walls to yield another fraction.

Margot winced, a sharp hiss of breath escaping her clenched teeth.The pleasure, so tenuously balanced, tipped instantly into a burn of overfill. “Ah, fuck!No, stop—” she choked out, her body instinctively recoiling. She pushed herself up, her cunt making a wet, sucking sound as it reluctantly released the monstrous, still-swelling shaft.She fell back onto the sheets, her own body throbbing with sudden, empty shock. Below her, Elena didn’t even pause.

“Yes,” Elena groaned, a sound of pure relief, as if Margot’s withdrawal had granted her sole possession of the sensation. She drove her hips down harder onto Stella, a frantic, piston-like motion.“More, Stella.You heard me. Give me more. Fill me up until I can’t fucking breathe.”

Margot watched, her hand instinctively going to her own aching, slick sex, as Elena’s stomach began to change. It was no longer just a taut curve. It was a distinct, unnatural bulge, low and central, as if two thick, fleshy water balloons were being inflated side-by-side inside her. The skin stretched, shiny and tight, the faint line of her navel distorting.

“Elena…” Margot whispered, the name a stunned exhalation.

Elena’s head was thrown back, her curls damp and wild. Her breaths came in short, ragged gulps, the air clearly compressed by the mass rising within her. Yet she kept moving, a relentless, hungry rocking, each downward grind urging the cocks to further, grotesque inflation. Her hands were braced on Stella’s thighs, her knuckles white.

Her hands were braced on Stella’s thighs, her knuckles white. A low, continuous moan spilled from her lips, a sound of pure strain and devotion. She was a creature of pure need, utterly consumed by the twin fullnesses splitting her open.

“Fuck me,” she chanted, her voice raspy and broken.“Fuck me raw, Stella. Make me feel it tomorrow.” Her hips churned in a slow, brutal circle, working the massive girths inside her with a terrible expertise. Every inch of her trembled with the effort of containment, her cunt and ass stretched to a burning, perfect limit. She was so full she could taste it, a metallic echo at the back of her throat.Then, the vibration began.

It didn’t come from Stella’s body. It emanated from deep within Elena’s own, a ruthless, internal thrumming that seized the two enormous cocks and turned them into living engines. The sensation was instantaneous and catastrophic.It wasn’t pleasure. It was a seizure of her nervous system.Elena’s entire body locked, a rigid arch of shock. A silent scream stretched her mouth wide before sound finally tore loose. “OH GOD!” The vibration buzzed through her swollen belly, a relentless, maddening frequency that ignited every raw, overstimulated nerve. Her cunt clamped in a violent, punishing spasm around the vibrating shaft, her asshole clenching in a frantic, helpless rhythm.

Elena's orgasm wasn’t a wave; it was a detonation.

It ripped through her, a blinding white shock that blurred her vision. Her head snapped back, tendons standing out in her neck. Her hips bucked wildly, no longer under her control, fucking herself mindlessly onto the vibrating pillars.“FUCK!FUCK! YES!” she screamed, the words torn and incoherent.The vibration intensified.

The cocks inside her expanded, just a fraction—a cruel, additional stretch that pressed the vibrating surfaces harder against her most sensitive spots. The orgasm hadn’t even faded before a second one clawed its way up from the same devastated ground. It was a merciless cascade, one seismic peak collapsing into another, deeper valley of sensation.“NO! NO, WAIT—!” she sobbed, her hands slipping from Stella’s thighs, scrambling for purchase on the sheets.Her body was a puppet jerking on electric strings. Tears streamed down her cheeks, mixing with the sweat on her chest. Each vibration felt like it was scrubbing her raw from the inside, rubbing her into a state of frantic, animal desperation. She couldn’t tell where one body ended and the other began.She was just a sheath for this brilliant, horrible machinery.

Margot watched, her own breath caught in her throat, her hand frozen between her legs. This wasn’t pleasure on Elena’s face.It was obliteration.A beautiful, terrifying erasure. The Elena who loved renaissance tapestries and the smell of old paper was gone, replaced by this twitching, sobbing creature being fucked into a puddle by a machine.

“STOP!” Elena finally screamed, the word ragged and ripped from the depths of her lungs. She collapsed forward, her forehead hitting Stella’s sternum, her body still convulsing with the aftershocks. “Stop, Stella.Please. I can’t… I can’t take any more.” Her voice was a broken whisper, a child’s plea.“It’s too much. Make it stop.”

The vibration ceased.

The sudden silence was deafening, broken only by Elena’s wrecked, hitching sobs. The colossal cocks remained, hard and unyielding inside her, a permanent, aching reminder. She didn’t move, couldn’t move, simply impaled and trembling on the stillness. A slow trickle of fluid, slick and warm, leaked from her overstretched cunt down onto Stella’s thigh.

Margot finally moved, crawling across the sheets. She didn’t know what to touch first—Elena’s heaving back, her tear-streaked face, the obscene bulge of her stomach. She hovered, a spectator unsure how to enter the ruin.“Elena?” she whispered.

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