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The Sins of the Brother

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Aaron Bennett is a man ruled by logic. At twenty-eight, the sharp, analytical social worker has built a stable life with his husband, Dakota Bennett—a warm, funny, and fiercely devoted detective who would do anything to protect the people he loves. Then Dakota’s younger brother comes back to town. Zack Bennett is everything Aaron shouldn’t want—red-haired, guarded, and quietly magnetic. A mechanic with grease on his hands and secrets in his eyes, Zack unsettles Aaron in ways he can’t explain and shouldn’t explore. What starts as stolen glances and tense conversations turns into something far more dangerous. As Dakota’s latest case tightens around the family and buried truths begin to surface, Aaron finds himself trapped between loyalty and longing. Because falling for the wrong brother isn’t just betrayal— It’s a line that, once crossed, can never be undone

Chapter 14: Claiming at Dawn

The grey dawn light didn’t so much illuminate the garage apartment as it reluctantly revealed it, turning the shadows from pools of ink to murky, dusty shapes. Aaron woke to the feeling of heat—a solid line of it along his back, and a heavier, specific heat between his thighs.

Zack’s arm was draped over his waist, possessive even in sleep. But Zack wasn’t sleeping. Aaron realized this as a calloused palm slid from his hip down to the sensitive skin of his inner thigh, pushing his legs apart. The movement was slow, deliberate. Zack’s breathing was even against the back of Aaron’s neck, but his touch was awake and focused.

A blunt, thick finger pressed against his entrance, which was still tender, swollen from the night before. Aaron gasped, a sharp intake of breath that sounded loud in the quiet room. The soreness was a stark, physical memory of everything they’d done, a dull ache that flared into bright sensitivity at the touch.

“Morning,” Zack rasped, his voice sleep-graveled and close to Aaron’s ear. He didn’t ask if it was okay. He didn’t check in. His finger simply began to work, pressing insistently against the tight ring of muscle, using the remnants of last night’s release and the natural sweat from their sleeping bodies as lubrication.

It burned. A sharp, stretching pain that made Aaron tense. He hissed through his teeth.

“Shhh,” Zack murmured, his lips brushing the knob of Aaron’s spine. His other hand came up to splay across Aaron’s chest, pinning him gently back against the solid wall of his body. “Just relax. Let me in.”

The command was low, devoid of last night’s anger, but thick with a different kind of intensity. It was a claim. Aaron forced his muscles to unclench, exhaling shakily as the tip of Zack’s finger breached him, sliding slowly inside to the first knuckle. The stretch was exquisite and brutal. He was so full of the memory of being taken that his body yielded reluctantly, the flesh hot and protesting.

Zack worked his finger in deeper, to the knuckle, then began a slow, probing push and pull. The pain gradually ebbed, replaced by a filthy, shameful spark of pleasure. Aaron bit his lip, his own cock stiffening against his thigh. He could feel Zack’s erection, hard and urgent, pressed into the cleft of his ass.

“Still so tight,” Zack breathed, a note of awe in his voice. He added a second finger alongside the first, and Aaron cried out, his back arching. The stretch was overwhelming, a bright lance of sensation that stole his breath. Zack shushed him again, his mouth finding the juncture of Aaron’s neck and shoulder, biting down not hard enough to mark, but enough to anchor him. He scissored his fingers, stretching him open with a ruthlessly efficient rhythm.

“You feel that?” Zack whispered, his voice a dark vibration against Aaron’s skin. “You feel how open you are for me?From last night. You’re still mine.”

He crooked his fingers, searching, and brushed over a place deep inside that made Aaron jolt as if shocked. A guttural moan was torn from him.

“There it is,” Zack said, a dark satisfaction in his tone. He pressed against that spot again, a relentless, focused pressure that unraveled Aaron’s composure completely. Pleasure, sharp and electric, radiated from his core. His hips pushed back of their own volition, seeking more of the touch, the soreness forgotten in a wave of desperate need.

Zack added a third finger.

Aaron shouted, his hands fisting in the scratchy blanket beneath them. The burn was intense, a feeling of being split wide, but the pleasure from the persistent pressure on his prostate was short-circuiting his brain. Tears prickled at the corners of his eyes. Zack fucked him slowly with his fingers, stretching him with deep, penetrating thrusts, preparing him with a thoroughness that felt ritualistic.

“Tell me,” Zack growled, his breath hot and damp on Aaron’s neck. His fingers stilled, buried to the hilt inside him. “Tell me you’re mine.”

It wasn’t a question. It was a demand for capitulation. Aaron’s mind, usually a sanctuary of reason, was a white-noise static of sensation. He was laid bare, physically and emotionally, pinned under the weight of Zack’s need and his own terrifying surrender.

“I’m yours,” Aaron choked out, the words raw and true.

Zack made a sound like he’d been struck. He withdrew his fingers swiftly, leaving Aaron feeling brutally empty. Before he could protest, Zack was shifting behind him, his hands gripping Aaron’s hips, lifting them, angling him up onto his knees. The blanket was rough against his skin. He felt exposed, vulnerable, his ass in the air, his body presented for Zack’s use.

He heard the tear of a foil packet—a new sound, a concession to planning—and then the slick, wet sound of Zack slicking himself. A moment later, the broad, hot crown of his cock was pressing against Aaron’s stretched, throbbing entrance.

Zack pushed in without ceremony.

The glide was smoother than the night before, aided by the lube and the careful, brutal preparation. But he was still huge, still an invasion that made Aaron see stars. He sank in inch by inexorable inch, a low, continuous groan rumbling from his chest. He filled him completely, a solid, burning presence that stole the air from Aaron’s lungs. Zack held himself there, buried to the root, his body trembling with the effort of restraint.

“Say it again,” he commanded, his voice strained.

“I’m yours,” Aaron gasped, pushing back against him, needing movement, needing the friction to consolidate the feeling of being owned.

Zack began to move.

It was a different pace than the night before. Not the frantic, punishing fury, but a deep, relentless, possessive rhythm. Each withdrawal was slow, a devastating drag over Aaron’s sensitive nerves, each thrust forward a solid, bottoming drive that punched the air from his lungs. Zack set a merciless tempo, his hips meeting Aaron’s ass with a soft, wet slap that grew steadily louder in the quiet room.

“Fuck,” Aaron whimpered, his face pressed into the pillow that smelled of Zack—sweat and motor oil and him. “Oh god, Zack.”

“You feel me?” Zack grunted, his hands tight on Aaron’s hips, surely leaving bruises. “You feel how deep I am? You’re gonna remember this. You’re gonna feel me inside you when you’re at your fucking job. When you’re buying groceries.”

The words were filthy, a psychological violation to match the physical one. Aaron loved them. He reveled in them. Each filthy promise coiled the tension in his gut tighter.

“Yes,” he chanted, a broken litany. “Yes, I feel it. I feel you.”

Zack’s rhythm broke, becoming harder, faster. He leaned over, blanketing Aaron’s back, his chest slick with sweat against Aaron’s spine. One arm wrapped around Aaron’s chest, holding him impossibly close, while the other hand slid down, wrapping around Aaron’s leaking cock.

The dual sensation was too much. Being fucked deep and hard while being stroked in time with the thrusts dismantled Aaron completely. He was babbling, a stream of obscenities and pleas he didn’t recognize as his own voice. The world narrowed to the piston-drive of Zack’s hips, the rough grip on his cock, the hot explosion of pleasure building at the base of his spine.

“Gonna come,” Zack warned, his voice guttural, his thrusts becoming erratic, slamming into him with wild, brutal force. “Gonna fill you up. Mark you on the inside.”

That was all it took. The raw, possessive declaration pushed Aaron over the edge. His orgasm ripped through him with silent, devastating force, his body seizing, his cock pulsing hot streaks over Zack’s fist and the blanket below. The clenching of his channel around Zack’s driving length pulled a ragged shout from the man above him. With three final, deep lunges, Zack stilled, burying himself as deep as he could go, his own release pulsing hot inside the condom as he groaned into Aaron’s shoulder.

They collapsed together onto the soaked blanket, a tangled heap of breathless, sweating limbs. For a long time, the only sounds were their ragged breathing and the distant, metallic groan of the building’s pipes.

Zack softened and slipped out, rolling onto his back beside Aaron. The loss of him, the sudden emptiness, felt profound. Aaron lay on his stomach, his body humming, every nerve alight and oversensitive. The scent of sex was thick and mammalian in the cold morning air.

Zack’s hand found his, their fingers intertwining on the stained fabric between them. The gesture was so unexpectedly tender it made Aaron’s throat tighten.

“Hungry?” Zack asked after a few minutes, his voice rough.

Aaron managed a weak nod against the pillow. “Starving.”

“I’ve got eggs. Maybe some bread that isn’t moldy.” Zack pushed himself up, moving to the edge of the mattress with a wince. He disposed of the condom in a trash can by the workbench, then stood, naked and unselfconscious in the grim light. He pulled on his boxers and jeans, not bothering with a shirt, and padded to the small sink and hotplate in the corner.

Aaron watched him move. The play of muscle under the freckled skin, the dark red hair that trailed down his stomach, the stark, stark reality of him. This was his life now. This grimy room, this complicated, damaged man. The thought should have been terrifying. Instead, a fragile, impossible peace settled over him.

He got up, his body aching in a dozen new and wonderful ways. He found his boxers and pulled them on, then his trousers. He didn’t put on his shirt. He walked to the grimy window, looking out at the back alley coming to life. A cat picked its way through discarded pallets. The sky was the color of bruised steel.

Zack cracked eggs into a pan. The sizzle was a domestic sound, absurdly out of place.

“My phone’s been buzzing,” Aaron said quietly, not turning around. “It’s in my jacket pocket. On the floor.”

Zack didn’t reply for a moment. The only sound was the scrape of a spatula. “Dakota?” he finally asked, the name hanging between them like a ghost.“Maybe. Probably.” Aaron leaned his forehead against the cool glass. “I have to talk to him. Soon.”

“I know.”

“He’s going to hate me.”

Zack was silent. He plated the eggs onto two chipped plates. “He might,” he said, his voice devoid of its usual edge. It was just a fact. “He loved you.”

Loved.Past tense. The word was a small, sharp pain.Aaron turned. Zack was setting the plates on the workbench, having to shove aside a carburetor to make space. He looked up, meeting Aaron’s gaze. His eyes were guarded, but there was no lie in them. No false comfort.

“Come eat,” Zack said.

Aaron crossed the room and sat on a stool. They ate in silence, the eggs tasting of grease and salt and a future that was terrifyingly, irrevocably unclear. Outside, it began to rain, a slow, cold drizzle that streaked the dusty windows. Inside, the single bulb above them flickered once, then burned steadily.

Inside, the single bulb above them flickered once, then burned steadily. Aaron stared at his empty plate, the yellow smear of yolk congealing next to a faint grease-stain shaped like a wrench. The silence wasn’t uncomfortable. It was thick, loaded with everything they’d just done and everything they hadn’t said. Rain tapped a sporadic rhythm on the corrugated metal roof.

Zack stood, collecting the plates. His bare back was a landscape of old scars and new scratches. Aaron’s doing.

“I should go,” Aaron said, the words tasting wrong. He didn’t move.

“Yeah.” Zack rinsed the plates in the sink, the water splashing. “Probably.” He didn’t turn around.

The distance between the sink and the stool felt like a canyon. Aaron watched the tense lines of Zack’s shoulders, the way his red hair was matted from sleep and sweat. The same hair Dakota had. The thought was a cold knife. It was always there. He closed his eyes and saw not Dakota’s betrayed face, but the raw, shattered hope in Zack’s eyes in the dark. You’ll regret it. Probably. But not tonight.

Last night was gone. This was the grey morning.

Aaron stood. The floor was cold under his feet. He walked to his discarded shirt, pulled it on over his sore body. The fabric felt alien, a costume from a discarded life. He buttoned it slowly, each button a decision.

Zack shut off the water. He leaned against the sink, arms crossed, watching him dress. His expression was unreadable, that old guard slammed back into place.

“So that’s it?” Zack’s voice was flat. “You get your head straight, remember who you are, and walk?”

Aaron fastened the last button. He looked around the cluttered room—the engine parts, the stained couch, the bed with its tangled blanket. It was a shithole. It was the most honest place he’d ever been.

“No,” Aaron said. The word was quiet but absolute. “That’s not it.”

He crossed the room until he was standing in front of Zack, close enough to touch. Zack’s guarded eyes flickered with something like fear.

“Move in with me,” Aaron said.

The rain filled the silence. Zack blinked. He uncrossed his arms, letting them hang at his sides. “What?”

“You heard me.” Aaron’s heart was a frantic drum against his ribs, but his voice was steady. It was the most illogical, analytical conclusion he’d ever drawn. The data was chaos. The only consistent variable was this man. “Move out of this garage. Into my place. Let’s see if this,” he gestured between them, at the room, at the memory of the biting kiss and the crushing fullness, “can actually work.”

Zack let out a short, disbelieving breath that was almost a laugh. He looked away, shaking his head. “You’re out of your fucking mind. After one night? After… everything?”

“It wasn’t one night,” Aaron corrected, his voice low. “It was a year of me thinking about you. It was me moving to this town. It was you driving through a storm. It was last night on that couch and your fingers inside me this morning. That’s not one night. That’s a pattern. A fucked-up, devastating pattern. I want to see where it leads.”

“It leads to disaster.” Zack’s gaze was back on him, fierce. “To me wrecking your life for real. To Dakota finding out and hating us both forever.”

“My life was already wrecked,” Aaron said, a sudden sharpness in his tone. “I wrecked it. I was miserable. I was a ghost in my own marriage. This?” He reached out, his fingers barely grazing the scar on Zack’s abdomen. “This is the first real thing I’ve felt in years. I’m terrified. But I’m not walking away from it.”

Zack stared at his hand. He swallowed, his Adam’s apple bobbing. The vulnerability was back, raw and terrifying. “I don’t know how to do… that. The moving in. The domestic shit. I’ll fuck it up.”

“I don’t need you to be domestic,” Aaron said. He slid his hand up, over the tense pectoral muscle, feeling the rapid heartbeat beneath. “I need you to be here. With me. However you are. We’ll figure the rest out. Or we won’t. But we’ll be in the same space while we fail.”

A long, shuddering breath escaped Zack. He looked utterly disarmed. The tough mask was gone, leaving only the wary, yearning man beneath. He leaned forward slowly, until his forehead rested against Aaron’s. His skin was warm. His eyes were closed.

“This is a terrible idea,” Zack whispered.

“I know.”

“You’re gonna get sick of my mess. Of me.”

“Maybe.”

Zack’s hands came up, framing Aaron’s face. They were rough and smelled of soap and gasoline. He opened his eyes. The green in them was vivid, startling. “Okay.”

The word was so soft Aaron almost missed it. “Okay?”

“Yeah.” Zack’s thumb stroked his cheekbone. “Okay. I’ll move my shit into your pristine little house. I’ll track grease on your floors. It’ll be a fucking catastrophe.”

A wave of relief, so profound it felt like weakness, washed through Aaron. He leaned into the touch.

Then Zack kissed him. It was nothing like the kisses before—not angry, not desperate. It was slow, deep, and heartbreakingly tender. A sealing of a pact. Aaron melted into it, his hands finding Zack’s waist, pulling him closer until their bodies aligned from chest to thigh.

The tenderness lasted only a moment. The spark between them was too volatile. The slow kiss became hungry, tongues sliding, teeth nipping. Zack’s hands left Aaron’s face and yanked at his freshly buttoned shirt. “Off,” he growled against his mouth. “I need to feel you.”

Aaron shrugged the shirt off, letting it fall. Zack’s mouth was on his neck, sucking a bruise into the skin above his collarbone, a deliberate mark. His own hands went to the button of Zack’s jeans, fumbling it open. He pushed the denim down over Zack’s hips, taking his boxers with them. Zack’s cock sprung free, already hard and flushed against his stomach.

“Bed,” Aaron managed, pulling back.

“Fuck the bed,” Zack said, his voice thick. He turned Aaron around, bending him over the workbench. Cold metal bit into Aaron’s stomach. Blueprints and loose nuts scattered to the floor. Zack kicked his own jeans the rest of the way off, then pressed his body along Aaron’s back.

His hand snaked between Aaron’s legs, fondling his balls, then stroking his perineum before pushing a thick finger back into his hole. Aaron gasped, his fingers scrambling for purchase on the greasy bench. He was still loose, still sensitive from earlier, and the finger slid in easily, a slick, claiming invasion.

“You’re so open,” Zack breathed, his lips at Aaron’s ear. He added a second finger, scissoring them, stretching him with a practiced, ruthless efficiency that made Aaron’s knees weak. “All day, you’re gonna feel this. You’re gonna feel how I own this hole.”

He curled his fingers, and Aaron cried out, his cock jerking against the underside of the bench. “Please.”

“Please what?” Zack bit his earlobe. “You want my cock buried in you? Want me to fuck you over your own workbench so you remember it every time you try to be neat?”

“Yes, god, yes, fuck me.” Aaron was past shame, past anything but need.

Zack removed his fingers. Aaron heard the rip of another foil packet, the slick sound of lube. Then the blunt, hot pressure of Zack’s crown was at his entrance. Zack pushed in slowly, a relentless, burning invasion that forced a ragged sob from Aaron’s throat. He was so full, so perfectly split open. Zack sank to the hilt and stopped, his body a furnace against Aaron’s back, his breath coming in harsh gusts.

“Mine,” Zack whispered, a raw, broken sound.

“Yours.”

Zack began to move. He set a deep, pounding rhythm, each thrust slamming Aaron into the edge of the bench. The metal dug into his hip bones. The pain was a bright counterpoint to the devastating pleasure of being filled so completely. Zack’s grip on his hips was iron, fingers pressing into the bruises from last night, claiming them anew.

The pace increased. The sound was obscene—the wet slap of skin, the creak of the workbench, their mingled grunts and curses. Zack leaned over, his chest plastered to Aaron’s back, his mouth on Aaron’s shoulder.

“Gonna come inside you,” he panted. “Gonna fill you up. Mark you as mine on the inside, where no one can see.”

His words were the final trigger. Aaron’s orgasm tore through him without a hand ever touching his cock, a seismic wave of pure, convulsive pleasure that clenched around Zack’s driving length. He shouted, his vision whiting out at the edges.

Zack groaned, a long, low sound of surrender, and slammed home one last time. Aaron felt the pulsing heat of his release through the latex, the rhythmic throb deep inside him as Zack emptied himself. They collapsed together over the bench, spent and shaking.

Minutes passed, marked only by the slowing of their breath and the constant patter of rain. Zack softened and slipped out. He turned Aaron around gently, his hands cupping his face. He looked dazed, wrecked.

“Okay,” Zack said again, his voice hoarse. He kissed him, softly this time. “I’ll move in.”

Aaron rested his forehead against Zack’s, the reality settling around them like the dust in the room. It was a beginning. It was a betrayal. It was a promise made on a greasy workbench, sealed with sweat and come. The path ahead was a minefield, and Dakota’s ghost waited at the edge of it.

But for now, they were here. Together.

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