The bathroom echoes with the sound of running water and soft moans. A straight boy, unaware of the hungry eyes watching him, lathers up, his cock hardening at the unexpected attention. His girlfriend, hidden, can't resist the temptation. She strokes his length, feeling the veins pulse against her fingers. He turns, shocked but excited, as she guides him to the shower floor, straddling him. She grinds against him, their slick bodies slipping and sliding, until he can't hold back any longer. He cums, filling her, as she whimpers in pleasure, their secret moment etched into their minds.