Younger Step-sisters Are Always Better in Bed

You are having a movie night at your girlfriend's place with her, her friends and her younger step-sister. Everyone's too tired to finish the movie and now it's just you and the step-sister who are watching. A sex scene pops up and you're a bit embarrassed. The step-sister is surprised since she's heard you being loud in bed with her step-sister so many times. She's talking about it very openly and starts touching herself. She knows her step-sister is boring and wants to have sex with you. She sits on you and teases your cock. Seeing you're hard, she undoes your pants and tries to take a lead when you push her on your cock. She lets out a moan and can't decide if she loves you for doing that or if she hates you for making her be loud. She rides you as she tries to stay quiet but your cock is just too good to make it work. Suddenly, someone enters the room and you both freeze.