My sister letting him spread her legs and fuck her even though our parents are in the other room

In the dimly lit bedroom, the teen sister, with a mischievous grin, lets her boyfriend sneak in. Despite their parents being just a wall away, she spreads her legs, inviting him in. He slides into her, their breaths mingling as they move in sync, the thrill of almost getting caught heightening their pleasure. The room is filled with soft moans and the rustle of sheets, a secret they share, a risk they take.