Chapter 5

A second orgasm tore through her, silent and violent, her internal muscles clenching around him in rhythmic pulses that milked his climax from him. Matt buried his face in her neck to stifle his roar as he came, pumping his release deep inside her, claiming her, filling her, and marking her again in her husband's bed.

He collapsed over her, spent, his weight pressing her into the mattress as their harsh breathing filled the silence. After a long moment, he pulled out and rolled off her, lying on his back beside her on the rumpled duvet, staring at the ceiling as a sheen of sweat cooled on his skin. Mara didn't move. She stayed on her hands and knees, head hung, his cum and her milk dripping onto the sheets she shared with her husband.

Matt turned his head on the pillow and looked at Dominic's peaceful, sleeping profile, then at the wreck of his sister beside him. He reached out, ran a finger through the wetness on the small of her back, and brought it to his mouth, sucking it clean as his eyes held hers. He held her gaze as he pulled his wet finger from his mouth, extending it toward her lips, glistening with their mixed salt and sweetness. “Taste.”

Mara's eyes were wide, glassy with spent tears as she stared at the offered finger, the proof of what he'd done to her, in her. Her breath hitched before she slowly leaned forward. Her lips parted, her tongue flicking out to touch the pad of his finger, and the taste exploded on her tongue, musky, salty, intimately familiar and utterly foreign. Him. Her.

A soft, broken noise caught in her throat. “All of it,” he murmured, and she closed her lips around his finger, sucking gently, cleaning it, eyes squeezed shut as a fresh tear escaped.

When she released him, her head dropped again, hair as black as the night hiding her face. Matt watched the surrender settle into her bones, then shifted on the duvet, turning fully onto his side and propping his head on his hand to face her.

His other hand reached out and stroked a damp strand of hair from her cheek in an almost tender touch. “Look at him,” he said, his voice low, but when Mara didn't move, his fingers tightened in her hair, not enough to hurt, just enough to guide, turning her head toward Dominic. Her husband slept on, face relaxed with one arm curled under his pillow, unaware of the desecration on his maternal bed.

“Look at what you did,” Matt breathed into her ear. “Right next to him. You came for me. Twice. You sucked my cock in his bed, and you're dripping me onto his sheets.”

She whimpered, trembling under the weight of his words.

“He's probably dreaming about his future,” Matt continued, “and you're full of your brother's cum. Your milk is leaking for me. Not for the baby, not for him. For me.”

His hand left her hair and trailed down her spine, over the curve of her ass, slick with sweat and their mess, and cupped her there.

He let the silence stretch, let her feel the truth of it as his thumb found the swollen, sensitive nub of her breast, circling it and catching a fresh bead of milk. He brought his thumb to his mouth and sucked it clean, eyes never leaving her profile. “You're going to sleep here tonight. Like this, stick with me. And when he wakes up and kisses you good morning, he'll taste us on your tongue.”

“Matt… please.”

“Please what?” he asked, genuinely curious, shifting closer, so his chest pressed against her side, his hardness already returning, nudging against her thigh.

She didn't answer. There was no answer. Please stop? Please let me go? Please don't make me want it again? She didn't even know what she was asking for.

“You don't get to say please,” he murmured against her shoulder, pressing a slow, open-mouthed kiss that tasted of salt. “You gave that up in the kitchen. You're mine to use, my leaking cunt.”

His hand slid between her thighs from behind. She was still soaked, swollen, and sensitive, and he groaned softly at the feel of her. “Fuck. You're still so wet, still hungry for it.” He pushed two fingers inside her easily, a slow, twisting penetration that made her gasp, her back arching slightly.

“See?” he whispered, lips at her ear, pumping his fingers slowly as the wet sound grew louder. “Your husband's right here, and your cunt is gripping my fingers like it's afraid I'll leave.” He curled his fingers, finding the spot that made her jolt, a choked sob escaping her as her hips pushed back against his hand.

Matt smiled as he withdrew his fingers and brought them to her lips. “Clean them.” This time there was less hesitation; her eyes were closed as she took his fingers into her mouth, tongue swirling around them, tasting her own desperate arousal, suckling gently in mimicry of the act he'd forced on her minutes before.

When she was done, he stroked her cheek. “Good girl.”

He rolled onto his back again, staring at the ceiling. “Go to sleep, Mara,” he said, his voice finally losing its sharp edge, slipping into something like exhaustion. “He'll be up for work in a few hours.”

She didn't move from her hands and knees, trembling lightly as the sweat cooled on her skin. Matt reached over and pulled at her hip, gently. “Lie down.”

She collapsed onto her side, facing him, her back to her husband, knees drawing up slightly as the evidence of their fucking became a cold, sticky patch on the sheets between them.

He looked at her, the tear-streaked face, the bruised mouth, the bare, milk-damp breast, then reached out and pulled the rumpled duvet up over her shoulders, tucking it around her like a child. The gesture was so at odds with everything that it made her breath catch in a new kind of confusion. “Sleep,” he repeated, and she closed her eyes.

“Good girl.”

Matt stayed with her until she slept. Only then did he rise from the bed. He placed a kiss on her forehead before he left, smiling to himself. He already knew what would happen in the morning when Dominic woke. He'll find his wife thoroughly fucked. If things went his way, that bastard might divorce his stepsister, and when that happens, he'll rush to fill in the gap of a father for her child, just like he had always wanted. She'll be his, and his alone.

A/N

In case you have a fantasy you want me to pen down, just comment on it, and I'll pick the new stories from it.