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Forbidden Bonds of Blood

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Thea Gimotea is 25 yrs old and her new husband Ernesto went out for dinner with her brother, 22 yr old Andres and his girlfriend Katie. During dinner, while the girls are in the bathroom Ernesto suggests a partner swap saying Thea is always talking about her perfect brother. Andres say yes only to get Thea away from this creep. In the end, Ernesto is right Thea does indeed have feelings for Andres and she will spend the night showing just how deep those feeling go, but she has no idea her beloved brother has an enormous 12 inch cock

Chapter 1: The Proposal

The air in the booth was thick with the smell of seared meat and expensive bourbon, a scent that usually felt like celebration but tonight just felt heavy. The low chandelier cast a honeyed glow over the polished wood, painting their four glasses in liquid gold. Thea smiled, small and tight, from her seat beside Ernesto, her fingers tracing the rim of her water glass. She was trying, always trying, to make this work.

Across from her, Andres watched his sister’s face, reading the strain around her eyes like a familiar text. He’d practically raised her after the funeral, but now, at twenty-two, he felt powerless all over again.

“So, Katie,” Ernesto said, his voice a smooth, confident baritone that seemed to absorb the light. “Andres tells me you’re in art therapy. That’s fascinating.” He leaned forward, his green eyes fixed on Katie with an intensity that felt like a physical touch.

Katie, a willowy blonde with a nervous laugh, tucked a strand of hair behind her ear. “Oh, it’s just grad school.Lots of theories about healing.”

“Healing,” Ernesto repeated, as if tasting the word. “We all need a little of that, don’t we?”

Thea shifted beside him. “I think I’ll just run to the ladies’ room. Katie, care to come with me?”

“Sure,” Katie said, a little too quickly, sliding out after Thea. The two women disappeared behind the frosted glass partition, their footsteps fading into the murmur of the restaurant.

The silence they left behind was different.Heavier. Andres took a long swallow of his beer, the chill doing nothing to cool the sudden heat under his collar.Ernesto didn’t wait. He leaned across the table, the shadow of his beard making his grin seem sharper. “She’s something else, your Katie.”

“She’s not my Katie,” Andres said, his voice flat. “We’ve been on three dates.”

“Right, right.” Ernesto waved a hand, his eyes never leaving Andres’s face.They were calculating, those eyes.Always assessing. “Listen, I’m going to cut through the crap. I see the way you look at Thea.”

Andres’s fist clenched under the table, his knuckles pressing hard into the velvet bench. “She’s my sister.”

“Of course she is,” Ernesto said, his tone dripping with false understanding.“A very beloved sister.A beautiful sister.You worry about her. I get it.You think I’m not good for her.” He paused, letting the accusation hang. “Maybe you’re right. Maybe I’m not the saint she deserves.”

“What’s your point, Ernesto?”

“My point is an opportunity. For all of us.” He lowered his voice to a conspiratorial murmur.“We swap.For tonight.You take Thea. I take Katie.”

The words hung in the bourbon-scented air, monstrous and absurd. Andres felt a cold nausea twist in his gut, followed by a surge of fury so hot it blurred his vision.“You’re disgusting.”

“Am I?” Ernesto leaned back, swirling his whiskey. “Or am I just honest?You want to protect her?Fine.Give her one night. One night of… whatever she needs from you.No strings.No consequences. And I get a night with the lovely Katie.Everyone gets what they want. Thea gets a break from me, and you… you get to be her hero. For real this time.”

Andres’s mind was a riot. The visceral revulsion at the proposal warred with a darker, shameful current that had whispered in the depths of him for years—a secret he kept locked away tighter than the fact of his own embarrassing, disproportionate body.This was a trap.A sick, manipulative trap. But within it, he saw a terrible thread of logic. If he agreed, he could get Thea away from this man, if only for a few hours. He could talk to her, make her see sense without Ernesto’s influence clouding everything.That was the reason. That had to be the only reason.“She would never agree,” Andres heard himself say, his voice strained.

Ernesto’s smile was thin and triumphant.He’d heard the hesitation. “Leave that to me.She’s my wife.I know how to talk to her. The question is, are you in?One night. A simple trade.”

Under the table, Andres’s fists were trembling. He thought of Thea’s tight smile, the way she jumped at Ernesto’s sudden laughs.He thought of her praying by her bedside, eyes clenched shut against the world. He thought of the colossal, hidden part of himself he feared would hurt anyone he ever got close to, a secret that felt suddenly less like a burden and more like a weapon he could wield, just once, for her.

“If you hurt her,” Andres said, the words gravel, “I will end you.”

Ernesto’s eyes glinted, satisfied.“Then we have an understanding. And don’t worry about Katie. I’ll be a perfect gentleman.” He threw back the rest of his whiskey just as the click of heels approached the booth.

Thea and Katie reappeared, their faces freshly composed. Thea slid in next to Ernesto, who immediately draped an arm around her, pulling her close. “Everything okay, sweetheart?” he asked, his voice all concerned warmth.“Fine,” she said, but her eyes flicked to Andres, searching.

Andres forced a smile, his heart hammering against his ribs. He looked at his sister, so petite and earnest, so devastatingly unaware of the pact just made over polished mahogany. The secret thrummed between the two men, a vile new thread in the fabric of the evening. The taste of his beer was now bitter, and the luxurious booth felt like a cage, the deal done, the night tilting irrevocably toward a dangerous, uncharted edge.

The taste of his beer was now bitter, and the luxurious booth felt like a cage, the deal done, the night tilting irrevocably toward a dangerous, uncharted edge.Ernesto made his move over coffee. His hand was on Thea’s knee under the table, his voice a low murmur only she could hear. Andres watched, helpless, as his sister’s expression shifted from confusion to disbelief, then to a pale, resigned horror. She shook her head once, a sharp little movement, her eyes darting to Andres as if for rescue. Ernesto whispered again, his lips close to her ear, and Andres saw the exact moment she fractured. Her shoulders slumped, the fight leaking out of her.She gave a single, tiny nod.

“Katie,” Ernesto said, his public voice returning, bright and charming.“Andres has had a bit too much to drink. I’ve just gotten us a couple of rooms upstairs—Thea will get him settled, and I’ll walk you to yours.Make sure you get home safe.”

Katie’s brows knitted. She looked at Andres, who couldn’t meet her eyes.She was smart. She saw the lie.But she also saw Andres’s strained, almost pleading expression.She liked him. Really liked him. This was clearly some messed-up family thing, and if playing along tonight helped him, she would.She could ditch the husband the second she had a chance.

“Sure,” Katie said, forcing a light smile. “That’s… really thoughtful of you, Ernesto.”

The walk to the elevator was a funeral procession. Thea clutched her small purse, her knuckles white. Andres moved beside her, wanting to touch her arm, to say this was all a mistake, but the words were concrete in his throat. Ernesto chatted amiably, as if arranging a business merger. The elevator doors closed on the four of them, a mirrored tomb reflecting their silent panic.On the twelfth floor, Ernesto handed a keycard to Andres. “Room 1215,” he said, his green eyes glinting with perverse triumph.He held another card. “We’re just down the hall in 1220. Come on, Katie.”

Katie gave Andres one last, searching look, then turned, following Ernesto with squared shoulders. Andres watched them go, his stomach a knot of ice.

He unlocked the door to 1215. It was a standard, plush hotel room—a king bed, a desk, a silent television.The door clicked shut, sealing them in a thick, awkward silence.

“Thea, listen—” Andres began, his voice rough.“Don’t,” she whispered. She stood rigidly in the center of the room, back to him. Then, with a visible force of will, she turned. Her eyes were huge, shimmering with unshed tears, but her mouth was set in a firm line. The mothering instinct, the one that had gotten them through their parents’ death, clicked into overdrive, overriding her fear.Her brother was in distress. That was her domain.

“You’ve had a lot to drink,” she said, her tone switching to practical, nurselike.“Let’s get you out of these clothes. You’ll feel better.” She moved toward him, her movements deliberate.“Thea, stop.This is insane. We don’t have to—”

“Hush,” she said, her fingers already working on the buttons of his shirt.Her touch was clinical, efficient.“I’m your sister. It’s my job to take care of you.” She was reciting it like a mantra, building a wall of normalcy against the surreal horror of the situation. She pushed the shirt off his shoulders, letting it fall to the floor. Her small hands went to his belt buckle next, the metallic clink loud in the quiet room.

Andres stood frozen, a statue of agony and rising, shameful arousal.He could smell her perfume, something soft and floral, mixed with the faint scent of her fear. He looked down at the top of her head, at the familiar part in her brown hair, as she undid his belt and the button of his jeans.The zipper descended slowly.

She was still talking, a steady stream of comforting nonsense.“Remember when you had the flu in tenth grade? And I made you that terrible chicken soup? You still ate it all…”

She hooked her thumbs in the waistband of his jeans and his briefs, and with a single, firm motion, pushed them both down his hips.Her stream of words stopped.Cut off.

Andres closed his eyes, a hot wave of shame washing over him.He heard a soft, sharp intake of breath.There it was. His secret. The source of a lifetime of awkward jokes he never laughed at, of turned heads in locker rooms, of scared or overly-enthusiastic first touches. It hung thick and heavy between his legs, now semi-hard and already formidable—a grotesque, disproportionate reality.Thea was silent. The mothering facade shattered. She just stared, her earlier nervousness, her religious guilt, her confusion, all swallowed by sheer, disbelieving shock. Her gaze was fixed, wide-eyed, on the sheer, impossible size of him. The room held its breath.

The silence stretched, thin and brittle.Andres couldn't look at her. He stared at the patterned hotel carpet, the weight of his own body a sickening humiliation. He expected her to turn away, to cover her mouth in revulsion, to flee.

He heard the rustle of fabric instead.He forced his eyes open.Thea was moving with a frantic, determined speed. Her fingers, which had been so steady before, now fumbled at the zipper of her own dress.She yanked it down, the sound harsh in the quiet. She shoved the dress off her shoulders, letting it pool around her ankles. She stepped out of it, clad only in simple white cotton underwear and a matching bra. She undressed quickly, almost like she was worried he was going to run off.“Thea, don’t—” His voice was a broken thing.

“It’s okay,” she whispered, but the words trembled.“It’s just me. It’s just us.” She wasn’t convincing him; she was convincing herself. The religious girl who crossed herself before meals, who hated crude language, was constructing a new prayer out of sheer, desperate will.Her brother was in pain.This was the sacrament she could offer.

She dropped to her knees in front of him.The view was obscene, profoundly beautiful, and it shattered him. Her pale, delicate shoulders, the curve of her spine, the vulnerable nape of her neck. And her face, now level with his thickened cock, her eyes wide with a mixture of terror and a fierce, misplaced tenderness.She didn’t know how to start. Her hands fluttered nervously before she reached out, her cool fingers wrapping tentatively around the base. She could only get a partial grip.She leaned forward, her breath hot against him, and opened her mouth.

The first touch of her lips was soft, hesitant. She took just the swollen head into her mouth, her tongue flicking experimentally.A low, guttural sound escaped Andres, part agony, part bliss. His hand came to rest on top of her head, not pushing, just anchoring himself to the dizzying reality.She pulled back, lips glistening. She looked up at his face, his eyes clenched shut again. “It’s… it’s okay, Andres,” she murmured, her voice husky and strange.She wasn’t talking to him, not really. She was talking to the fact of him, to the massive, intimidating flesh in her hands. She leaned in again, taking more this time, her mouth stretching wider.

She worked clumsily, with a naive enthusiasm that was unbearably erotic. In between wet, sucking pulls and frantic licks, she would talk, her words muffled against his skin.

“You’re so… big,” she gasped, pulling off for air, a string of saliva connecting her lip to him. “I didn’t… oh, goodness… I didn’t know boys could be like this.” She dove back down, trying to accommodate him, her jaw straining.She came up again, panting. “It’s alright.I’ve got you. Shhh.” She was soothing the penis like it was a scared animal.Her hand pumped what her mouth couldn’t take.“Does that… does that feel better? You’re so hard. So hot.”

Each word was a violation of every boundary they’d ever had, and each one sent a jolt of white-hot lightning straight to his core. Her devout, rule-bound vocabulary was being repurposed, corrupted into something lurid and intimate.

“You’re filling my whole mouth,” she whimpered, before taking him deep again, triggering her own gag reflex.She pulled back, coughing, tears springing to her eyes. But she didn’t stop. She wiped her mouth with the back of her hand and went back to it, a messy, determined rhythm building.“I’m here.I’m taking care of you. Just let it go.Give it to me.”

Andres was unraveling. The shame was still there, a cold knot in his chest, but it was being burned away by the searing heat of her mouth, by the surreal sound of her gentle voice saying such filth. His hips began to move of their own accord, small thrusts that pushed him deeper into her throat. She gagged but accepted it, her nails digging into his thighs.

“That’s it,” she breathed, looking up at him with watery, glazed eyes. Her innocence was gone, replaced by a dazed, carnal focus.“Use my mouth.Use your sister’s mouth. Get it all out.”

The blasphemy of it, the utter ruin of it, was what finally broke him. A sharp, choked curse he didn’t know he had in him ripped from his throat, and he pulled her head hard against him, spending himself in deep, pulsing waves down her throat. She swallowed convulsively, determinedly, until he was spent and shuddering, finally pushing her away gently as he softened.

She collapsed back on her heels, breathing heavily, her face flushed and smeared.She looked utterly used and completely resolved. The silence rushed back in, now charged and spoiled. She wiped her mouth again, her eyes avoiding his as she climbed unsteadily to her feet. She took his hand, her grip surprisingly firm, and led him toward the vast, waiting bed.

She took his hand, her grip surprisingly firm, and led him toward the vast, waiting bed. He followed, his legs unsteady, not from the alcohol but from the seismic shift in the world.The comforter was cool and slick under his bare back as she pushed him down. He looked up at her, at his sister, standing naked beside the bed. The golden light from a single lamp carved the gentle slopes of her body, the soft shadow between her thighs. Her face was unreadable, a mask of focused necessity.

She climbed onto the bed, one knee then the other, placing them on either side of his hips.SHE STRADDLES HIM.

Her weight settled onto his thighs. He was hard again, achingly so, jutting up against the small of her back.She reached behind herself, her small hand fumbling until her fingers wrapped around him. He hissed at the contact. She guided him, the broad, slick head of his cock pressing against a completely different heat.“Thea,” he choked out, a final, weak protest.

She looked down at him, her eyes pools of dark resolve. “It’s already done,” she whispered, her voice hollow.“My marriage.My vows. They’re already broken in that other room.This is just… cleaning up the mess.”

She said it like a fact. Like she was administering first aid.Then she lowered herself.The initial pressure was immense. She was tiny, tight, and he was not. A sharp, strained gasp escaped her lips as she began to sink onto him, inch by impossible inch.Her body resisted, then yielded, then resisted again. She braced her hands on his chest, her fingers digging in, her face a contorted mask of intense concentration and pain.

“Oh… oh, goodness… Andres…” Her voice was a thin thread of sound.He could feel every desperate, clenching internal fold as she worked to take him. It was a slow, wet, searing invasion. He watched, mesmerized and horrified, as her stomach subtly distended with the shape of him. She was taking so much, too much, her body stretching in a way it clearly never had before. She got about halfway, paused, breathing in ragged, sobbing huffs.A tear escaped and tracked through the smudges on her cheek.

“I can’t… it’s too…”

“Stop, Thea. Please, just stop.” His own voice was ragged.She shook her head, a frantic jerk.“No. He’ll know. If I don’t… he’ll know I didn’t try.” She meant Ernesto.This performance was for her husband. She bore down again, a shudder running through her entire frame.

With a final, wet, shuddering gasp, she sank the rest of the way, until her ass rested on his pelvis, until he was buried to the hilt inside her.She was completely impaled. She sat there, trembling, full of him, her eyes wide with the overwhelming sensation.Then she began to move.It was a clumsy, awkward rock at first. But it quickly became something else.Her internal muscles fluttered, then gripped him rhythmically. A low, broken moan spilled from her lips.Her head fell back.

“Oh, God,” she whimpered.Not a prayer.A confession.

She started to ride him in earnest, each lift and drop a little smoother, a little more confident. The pain seemed to mutate, blending with something else.Her sounds changed.The little gasps became longer, needier. “Oh… oh, Andres… you’re so… deep.You’re everywhere. I feel you… in my stomach.”

Her hips found a rhythm. The slick, wet sounds of their joining filled the quiet room. She leaned forward, putting her hands on the headboard for leverage, and the new angle made them both cry out.He could no longer be passive. His hands found her hips, his fingers biting into the soft flesh, helping her move, guiding her onto him with more force.

“Fuck,” he breathed, the curse foreign and necessary.Her eyes flew open at the word. She looked scandalized, then aroused beyond measure.“Say it again,” she panted.

“You’re fucking yourself on me, Thea.On your brother’s cock. You’re taking all of it.”

She moaned, loud and unchecked, her religious guilt burning away in the raw physical furnace.“Yes!It’s so… it’s so sinful. It’s so good.” She was chanting now, a filthy liturgy.“I’m so full. You’re splitting me open. Oh, sweet Jesus, right there!”

Her noises grew louder, unrestrained, the noisy girl Ernesto knew coming alive in a context he’d never imagined. She was bouncing on him now, her small tits swaying, her body glistening with sweat. The bedsprings creaked a frantic rhythm.Her dialogue dissolved into shattered, obscene fragments.

“My good boy… my big… oh, God yes… deeper… give it to me… ruin me…”

He could feel his climax coiling again, a tight spring in his gut. He thrust up to meet her, pounding into the devastating, tight wet heat. The sight of her, the sound of her, the forbidden feel of her—it was too much.

“I’m gonna come,” he growled.

“Inside,” she begged, her eyes wild, all pretense of caretaking gone, replaced by a primal, greedy need.“Fill me up. Do it.”

With a final, brutal thrust, he slammed up into her and let go. He held her hips down, grinding her against him as he pulsed, hot and deep. She screamed, a sound of shattered glass and raw triumph, as her own body convulsed around him, milking him in frantic, clutching waves.For a long moment, the only sound was their ragged breathing. Then, slowly, she slumped forward onto his chest, utterly spent, still intimately joined. The room stank of sex and sweat and shame. In the hall, a door closed quietly.

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