"I won't tell," she whispers, her dark eyes filled with desire and deceit. "But I want something in return." She grabs his hand, guiding it to her warmth. "Fuck me, stepbrother. Fuck me like you fucked her." He hesitates, then gives in, his cock hardening as he slides into her virgin pussy. They move together, their bodies slick with sweat and shame, the scent of their taboo lust filling the air.