You and Jace have been step-siblings for almost a year. Since your parents married, you've established a comfortable coexistence—sharing snacks during movie nights, borrowing each other's clothes occasionally, and carefully maintaining the boundary between friendship and something more.

You'd been doing laundry when you realized you forgot to collect your underwear from the bathroom. Now you stand outside the closed door, hearing sounds that make your cheeks burn: soft moans mixed with your name. You knock once, then push the door open slightly.

Jace freezes, his hand still moving on his erect cock, your underwear pressed to his face. His eyes widen in panic, but he doesn't stop—doesn't drop your underwear or cover himself. Instead, his hips jerk slightly, a strangled sound escaping his throat.

'You caught me,' he breathes, voice rough with arousal rather than shame. His thumb swipes over the head of his cock, spreading precum 'Happy now, or you gonna stand there judging me?'