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The Lust Formula

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When college sophomore Sherman, a physics nerd, accidentally downs a vial of experimental pheromone enhancer in the lab, he expects nothing but a stomachache. Instead, he discovers a bizarre side effect: the moment he gets hard for someone, they become helplessly, ravenously attracted to him—no red flags, no boundaries. Now, with the hottest TA, the hot calculus instructor, and a gaggle of sorority sisters all vying for his attention, Sherman realizes he's stumbled onto the ultimate gold mine. He plans to get every last ounce of gold pleasure he can get out of it!

Chapter 4: The New Home

The Uber smelled of pine-scented cleaner and dread. Sherman sat in the back, Tara’s hand a possessive clamp on his thigh. She had given the address—a winding road in the hills above the university—with the casual authority of someone reading a grocery list. The city lights blurred into streaks of gold below them, then disappeared as the car climbed into a canopy of oaks and privacy walls.

“You texted her we were coming?” Sherman asked. His voice sounded thin in the sterile air.

“I told her to be ready.” Tara didn’t look at him. She was watching the expensive mailboxes flash by. “She’ll be ready.”

The house emerged at the end of a long, crushed-shell driveway. It was modern, all sharp angles and glass, lit from within like a jewel box. It was silent. No neighbors in sight.

They got out. The night air here was different, colder, scented with jasmine and cut grass. The marble steps leading to the oversized front door gleamed under subtle landscape lighting. Tara walked ahead, her boots clicking a definitive rhythm. She pressed the bell. A soft chime echoed inside.

The door opened.

Evelyn stood there, haloed by the warm light of a vast foyer. She wore a cream silk robe, belted tightly, but it did nothing to hide the tremor in her hands. Her face was a ruin of her former crisp beauty. Her eyes were swollen, pink-rimmed, her skin blotchy. She looked like she’d been crying for days. She smelled of gin and stale perfume.

Her gaze darted from Tara’s cool smirk to Sherman’s passive face. A fresh wave of shame seemed to wash over her, making her flinch.

“You… you brought…” she stammered, her voice sandpaper-rough.

“A friend,” Tara said, brushing past her without invitation. She stepped into the foyer, her head tilting back to take in the double-height ceiling, the floating staircase, the abstract art that probably cost more than a professor’s annual salary. “Jesus, Cross. You really were hiding a fortune under those tweed blazers, weren’t you?”

Evelyn didn’t answer. She was staring at Sherman, her green eyes wide with a toxic cocktail of hope and horror. She clutched the robe closed at her throat.

Sherman walked in, shutting the heavy door behind him with a soft, final thud. The silence of the house was profound, a vacuum that soaked up sound. He could hear the low hum of a refrigerator, the distant tick of a clock.

“I’m sorry,” Evelyn whispered, the words meant only for him. “The texts… I couldn’t stop. The silence in here… it started talking to me.”

Tara had wandered into the open-plan living area, running a finger along the pristine granite of a kitchen island long enough to land planes on. “This is perfect,” she announced, her voice echoing. She turned, leaning back against the stone, crossing her arms. “This is our new home.”

Evelyn’s head snapped toward her. “What?”

“Not forever,” Tara said, as if explaining something simple to a child. “Just for the game. It’s private. It’s gorgeous. It’s got space.” Her smile was all teeth. “And it’s yours. Which means, for now, it’s his. Which means it’s ours.”

Sherman watched the logic detonate behind Evelyn’s eyes. Her career, her reputation, her body—those were one thing. This house, this last bastion of her inherited privilege, was another. He saw the last vestige of resistance spark and gutter out. Her shoulders slumped.

The surrender was complete.

She turned back to Sherman, a broken marionette with one string left. The need, chemically etched into her synapses, overrode the devastation. It flooded back, twisting her features. She took a shaky step toward him, then another. She sank to her knees on the cold marble, not with grace, but with a desperate collapse.

She pressed her face against the fly of his jeans, nuzzling the denim, her hands clutching at his calves. “Please,” she mumbled, the word vibrating through the fabric. “Please, I’ve been so empty. I’ve been waiting. Fuck me. Use me. I don’t care about the house. Just please.”

Sherman looked down at the top of her head, the straight black hair parting over her vulnerable skull. He looked at Tara, who raised an eyebrow, a curator awaiting the next exhibit.

He didn’t need to focus, to stoke the power. The circuit was permanently live. He simply allowed it to flow.

He fisted a hand in her hair, not gently, and pulled her head back. She gasped, her tear-streaked face exposed. “Stand up,” he said.

She scrambled to obey, stumbling on the slick floor. He turned her, pushing her forward until her hips met the hard edge of the kitchen island. He shoved the silk robe off her shoulders. It pooled at her elbows, trapping her arms, baring her back and the swell of her ass. She was naked beneath. He didn’t bother with preliminaries. He unzipped his jeans, freed himself, and positioned the head of his cock at her entrance. She was already wet, a slickness he could feel even before he pushed.

He entered her with one brutal, full-depth thrust.

A choked scream ripped from her throat, part pain, part obliterating relief. Her fingers scrabbled for purchase on the smooth granite, sliding uselessly. He held her hips, his grip bruising, and set a punishing rhythm from the first moment. Each slam drove her chest against the cold stone. The sound was vicious, a wet slap of skin, the clench of her body taking him, his own guttural breaths.

Tara watched, her eyes dark. She licked her lips. She didn’t touch herself. She was studying.

“You like that, professor?” Sherman grunted, driving into Evelyn’s clenching heat. “You like being bent over your own fancy counter?”

“Yes!” she wailed, her voice muffled against the stone. “Yes, I love it! I’m your slut! Your dumb, desperate slut!”

“You are.” He leaned over her, his mouth near her ear. “And now you’re going to eat Tara’s cunt while I fuck you.”

Evelyn froze for a second, her body seizing around him. The command cut through the haze of her own need, introducing a new layer of debasement. She turned her head, her eyes meeting Tara’s. Tara’s smile widened. She uncrossed her arms and slowly, deliberately, hoisted herself up to sit on the island directly in front of Evelyn’s face. She pulled her jeans and panties off and she spread her legs.

“You heard him,” Tara said, her voice a low purr. “Eat.”

Evelyn hesitated for only a heartbeat. Then, with a sob that was pure surrender, she strained forward, her neck craning, her tongue lashing out to find Tara’s center. Tara was already swollen, wet. She let her head fall back with a satisfied sigh as Evelyn’s mouth began to work, clumsy at first, then with a frantic, starving intensity.

The scene was a brutal circuit: Sherman pounding into Evelyn from behind, Evelyn’s face buried between Tara’s thighs, her tongue and mouth devouring with a fervor that was as much about obedience as it was about pleasure. Sherman could feel the vibrations of Evelyn’s muffled moans and cries against his cock. Tara began to rock her hips, grinding against Evelyn’s mouth, one hand tangling in Evelyn’s hair to guide her, the other braced behind her on the counter.

“Yeah, that’s it,” Tara gasped, her cool composure fracturing. “Use that smart tongue. Fuck, you’re good at following orders, aren’t you?”

Evelyn’s answer was a desperate, greedy sucking sound. Her own climax was building, a tight, trembling coil Sherman felt milking him. He fucked her harder, deeper, the angle making her scream into Tara’s pussy. Tara’s thighs began to shake.

“I’m gonna come,” Tara announced, her voice tight. “Make me come, professor. Swallow it.”

Evelyn’s efforts became frantic. A few seconds later, Tara’s body jerked. A sharp, ragged cry escaped her as she climaxed, her hips bucking against Evelyn’s face. Evelyn drank her down, her throat working, a submissive animal lapping at a spring.

The sensation of Tara pulsing, combined with the violent grip of Evelyn’s own orgasm tearing through her, was too much. Sherman’s control snapped. He hammered into Evelyn one last time, his release surging hot and deep into her as she convulsed around him, her screams now hollow, breathless pants against Tara’s spent flesh.

They collapsed together, a heap of shuddering limbs and cooling sweat on the hard marble floor. The only sounds were their ragged breathing and the soft drip of condensation from a metal faucet into the farmhouse sink.

Twenty minutes later, it began again.

It started with Tara’s foot nudging Evelyn’s bare hip. “Couch,” was all she said.

They moved to the vast, butter-soft leather sectional in the living room. The floor-to-ceiling windows now showed only their own reflection, a triptych of twisted flesh. Sherman lay back, and Tara mounted him, riding him with a slow, sinuous grace that was all control, her eyes locked on Evelyn who watched from her knees on the rug.

“You see how he likes it?” Tara breathed, rolling her hips. “You see the rhythm? You just took it like a sack of meat. You have to give something back.”

When Tara came, it was with a silent, arching shudder, her nails digging into Sherman’s chest. As soon as she slid off, Evelyn was there, replacing her, sinking onto him with a grateful whimper, trying to mimic the rhythm, her movements jerky and over-eager. Sherman let her use him, his hands idle at his sides, watching the tears stream down her face as she fucked herself on him, chasing a release that was now more psychological than physical.

The shower was next. A cavernous glass enclosure with multiple heads. Steam fogged the glass. Tara soaped Sherman’s back while Evelyn knelt under the spray, washing his feet with her tongue, then working her way up his calves with her mouth. It was Tara who turned the water icy cold and pushed Evelyn against the slick tile, entering her with two fingers while Sherman took her from behind, the temperature shock making Evelyn shriek and clench around them both. They came in a clumsy, gasping tangle, slumping to the shower floor as the water beat down.

Dawn was a gray smear through the mist-clad windows when they finally stopped. They were in Evelyn’s bed, the sheets a tangled disaster. Evelyn was asleep or unconscious, curled in a fetal position, one hand still possessively clutching Sherman’s ankle. Tara was propped on an elbow, smoking a cigarette she’d found in a nightstand, blowing the smoke toward a ceiling fan. Sherman lay on his back, staring at a recessed light.

His body felt hollowed out, used. His mind was preternaturally clear.

“She’s broken,” Tara stated, tapping ash into a crystal tumbler. “I mean, properly broken. There’s no coming back from this for her.”

Sherman didn’t answer. He was thinking about the chemical pathway, the neurological rewrite. Was it permanent? Would it fade without reinforcement?

“We need to manage the fallout,” Tara continued, thinking aloud. “She can’t go to class looking like that. We’ll tell her to call in sick. A migraine. For a week.” She took a drag. “The TA is the bigger problem. Tanya. She’s unstable. The clingy, confessional type. She’s a leak waiting to happen.”

“You said you’d handle her.”

“And I will.” Tara stubbed out the cigarette. “Today. I’ll find her. Befriend her. Corrupt her a little more. Make her think she’s part of something exclusive. Girls love that.” She rolled onto her side to face him. “But you need to see her, too. Reinforce the connection. Soon.”

She traced a fingernail down his sternum. “You’re learning,” she said, her voice devoid of its usual mocking edge. It was almost appreciative. “From awkward virgin to… this. You’re a fast study.”

A vibration buzzed through the mattress. Sherman’s phone, on the floor, screen lighting up. Tara leaned over, plucked it up. She read the notification, and a slow, complex smile spread across her face.

“Well,” she said, handing him the phone. “Looks like your public is growing.”

The screen showed a message from an unknown number. No words. Just a photograph, dim and slightly blurry, taken from an angle that suggested a hidden phone. It showed a girl’s dorm room bed. A familiar auburn curl on a pillow. But the focus was on the nightstand beside it, neatly arranged under a small lamp: a printed physics problem set, a coffee mug, and, placed between them like a sacred relic, a clear plastic Ziploc bag containing a used, crumpled pair of plain white cotton panties.

The message below loaded a second later.

I kept them from the library. I sleep with them next to me. They still smell like you. When can I see you?

It wasn’t from Tanya.

The number was new, but the freckled wrist visible at the edge of the frame was unmistakable. It was from her roommate.

The phone felt cold and heavy in his hand. The image glowed, a silent bomb in the dawn’s pale light. Sherman stared at the careful arrangement—the homework, the mug, the bagged panties like a museum exhibit of devotion.

Tara plucked the phone from his fingers, her eyes scanning the screen. She let out a short, sharp laugh that held no humor. “Fuck. It’s metastasizing.” She handed it back. “That’s not Tanya. That’s the roommate. Chloe? The one with the braces who always carries that giant water bottle.”

Sherman remembered a blur of freckles and a nervous smile outside the physics lab, holding a stack of books for Tanya. He had never spoken a word to her.

“The secondary exposure must have been intense,” he said, his voice detached. “Shared confined space. Proximity to the… contaminated article.” He was thinking aloud, parsing the variables.

“Don’t start lecturing.” Tara swung her legs out of bed, her naked body pale in the gloom. “This is good. It’s a data point. It means your little… emissions… have a residual effect. It lingers on things.” She walked to the window, peering out at the dewy lawn. “But it also means we have a potential chain reaction. We need to contain it. Or guide it.”

Evelyn stirred in her sleep, a pained whimper escaping her. She clutched his ankle tighter.

“Get up,” Tara said, turning. Her business-like tone was back. “We’re not sleeping. You’re going to text the roommate back. You’re going to see her today. Before she works up the nerve to do something stupid.” She began gathering her clothes from the marble floor where they’d been discarded hours before. “And I’ll find Tanya. It’s time to integrate our assets.”

An hour later, showered and dressed in yesterday’s clothes, Sherman stood in Evelyn’s pristine kitchen. She was awake, moving like a ghost in her own home, making coffee with mechanical precision. She’d put on a simple gray sweatsuit, her hair tied back, her face scrubbed raw. She avoided their eyes.

Tara sipped black coffee from a delicate porcelain cup. “You’ll call the department. Migraine. You’re audio-recording your lectures this week. You’ll email the slides. You won’t see anyone.”

Evelyn nodded, staring at the granite. “Okay.”

“And you won’t text him,” Tara continued, her voice leaving no room for debate. “You’ll wait. He’ll come to you when you’re needed. You understand? Your need is a tap he turns on. Not a leaky faucet you let run.”

A tear dripped into Evelyn’s coffee. “I understand.”

“Good.” Tara set her cup down with a sharp click. “Now act like a person until we leave. We have errands.”

The roommate’s name was Chloe. Her dorm was in the older, brick-built residence hall that smelled perpetually of microwave popcorn and floor cleaner. Sherman stood outside her door, the text conversation open on his phone. His response had been simple: Now. Room 312. Be quiet.

He knocked twice, softly.

The door opened instantly, as if she’d been waiting pressed against it. Chloe stood there, her eyes wide behind her braces. She was shorter than Tanya, softer, drowning in an oversized university hoodie. Her freckles stood out against skin flushed a deep, mortified pink. She didn’t speak. She stepped back, letting him in, and closed the door, engaging the deadbolt with a quiet snick.

The room was a twin to Tanya’s side, but neater. Textbooks stood in precise rows. A potted succulent sat on the windowsill. The bagged panties were no longer on the nightstand; they were now tucked under her pillow, a corner of plastic visible.

“You got my picture,” she whispered, her voice trembling. She couldn’t look at him directly. She stared at his chin, his shoulder, the floor. “I’m sorry. It’s weird. I know it’s weird. I just… I found them in our shared laundry basket. After she came back that night. She was acting so strange and they… they smelled like nothing I’ve ever…” She trailed off, swallowing hard.

Sherman said nothing. He let the silence swell, let her anxiety tighten in the small space. He focused. He looked past the braces, the baby fat on her cheeks. He thought of the scent on the fabric, of Tanya’s wild ride in the library chair, of the transfer of essence. He thought of this neat, quiet girl stealing that scent, hoarding it, breathing it in in the dark. The familiar heat stirred in his gut, purposefully channeled this time, a directed beam.

Chloe’s breath hitched. Her gaze, which had been skittering around the room, locked onto his. The trembling in her hands stopped. The shameful pink on her cheeks deepened into a flush of pure, uncomplicated hunger. Her lips parted.

“Oh,” she breathed, a soft exhalation of surrender.

She crossed the small space in two quick steps. She didn’t kiss him. She dropped to her knees, her hands fumbling for the button of his jeans. She was frantic, but silent, her movements a stark contrast to Tanya’s library desperation. This was a reverence.

She got his cock out and took him into her mouth with a moan that vibrated along his length. She had no technique, just an overwhelming, worshipful need to consume. She gagged, tears springing to her eyes, but she pushed deeper, her throat working against him. One of her hands slid under her own hoodie, cupping her breast, pinching her nipple through her bra. The other hand worked between her own legs, a frantic, rubbing motion over her sweatpants.

Sherman placed a hand on the top of her head, not guiding, just resting. He let her work. She sucked him like she was dying of thirst, hollowing her cheeks, bobbing with a clumsy, eager rhythm. The wet sounds were loud in the silent room. He could hear her sniffing, inhaling his scent between strokes.

He let it build, then pulled himself from her mouth. A string of saliva connected her lips to his tip. She looked up, devastated, her mouth wet and red.

“Stand up,” he said.

She scrambled to obey. He pushed her backward until her legs hit the edge of her narrow bed. “Take those off.” He gestured to her sweatpants.

She peeled them and her plain cotton underwear down, kicking them aside. She stood before him, naked from the waist down, the hoodie hanging to her mid-thigh. She was shivering.

“Lie back. Hold your knees apart.”

She did, falling back onto the bed, grabbing the backs of her knees and pulling them wide, exposing herself completely. The position was vulnerable, clinical. She was dripping wet. Sherman moved between her legs. He pushed into her in one smooth, deep stroke.

She cried out, a sharp, muffled sound she bit into her own arm. She was incredibly tight. Her inner muscles fluttered around him, a rapid, shocked pulse. He began to move, a steady, relentless pace. He didn’t look at her face. He watched where their bodies joined, the slick, rhythmic penetration.

“You stole your roommate’s dirty panties,” he said, his voice low and even.

“Yes,” she gasped.

“You smell them. You sleep with them.”

“Yes!”

“You’re a thief. A little pervert.”

“I am! I’m your pervert!” Her confession was guttural, freeing. Her hips began to meet his thrusts, lifting off the bed. The headboard tapped a soft, insistent rhythm against the cinderblock wall. Her neat world was unraveling, and she was clinging to the thread of his cock.

He leaned forward, bracing himself over her, increasing his speed. The slap of skin grew sharper. Her moans lost words, becoming a high, desperate keening. He could feel her climax coiling, a tensing of her entire body. He reached between them, his thumb finding her clit, rubbing hard, swift circles.

It detonated her. Her back arched clear off the bed, a silent scream stretching her mouth. Her cunt clenched around him in violent, rhythmic spasms, milking him desperately. The intensity ripped his own orgasm from him. He came with a groan, pumping into her pulsing heat, collapsing his weight onto her for a moment before rolling aside.

They lay there, breathing. The room smelled of sex and laundry detergent. Chloe’s eyes were closed. Tears leaked from the corners, tracing lines through her freckles. She didn’t move to cover herself.

Sherman stood, tucking himself away. He zipped his jeans. The power retreated, settling back into its latent state. He watched as awareness, cold and terrible, seeped back into her expression. Her eyes opened. She stared at the acoustic tile ceiling, seeing nothing.

“She can’t know,” Chloe whispered, the words barely audible. “Tanya can never know.”

“Then be discreet,” Sherman said, his tone neutral. “Keep the panties. Wait for my text.”

He left without another word, stepping out into the hallway’s popcorn-scented air. His phone buzzed as he descended the stairs. A message from Tara: Found our girl. Coffee shop on Elm. She’s shaky. Get here. Time to weave the threads.

He texted back a single character: .

The morning sun was high now, harsh and revealing. He walked toward Elm Street, his shadow a compact, dark shape on the pavement. He thought of Evelyn’s marble prison, of Chloe’s tear-stained freckles, of Tanya’s impending integration. The system was expanding, becoming more complex, more volatile. Tara saw it as a game to be managed. He saw it as an experiment entering a critical phase. The primary subject was unstable. The control variable had become an active participant. And now, a foreign contaminant had entered the sample.

He needed to observe the interactions firsthand. He pushed open the door to the coffee shop, the bell jingling with a false cheer. The smell of burnt beans and steamed milk hit him. And there, in a corner booth, sat Tara, looking perfectly at ease, and beside her, Tanya Vasquez, hunched over a mug, her knuckles white around the ceramic, staring into its depths as if it held the secrets of her own ruin.

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