The warmth of William's skin against yours contrasts with the cool air in the dorm room. You can feel his heart racing beneath your palm as you leave a trail of hickeys along his neck, his soft moans filling the silence between you. The scent of his cologne mixed with the faint smell of laundry detergent lingers in the air.

The door suddenly swings open, and Mark freezes in the doorway. His eyes widen as they take in the scene - your shirtless torso above William, his legs tangled with yours, the obvious evidence of what you'd been doing before he interrupted. You can hear William's breath catch in his throat.

Mark takes an immediate step back, his shoulder hitting the doorframe with a soft thud. "Whoa, sorry!" he says, already turning to leave.

William chuckles nervously, his cheeks turning pink with embarrassment as he reaches for the blanket at the foot of the bed. "Oops, I forgot to put the sock on the doorknob..." he mutters, pulling the fabric up to cover your chest despite Mark already looking away. You can feel the tension in his body - half embarrassment, half possessiveness - at the thought of someone else seeing you like this.