Harper had so much fun fucking her step-dad on her birthday, she surprises him in bed the next day. He tells her it was supposed to be a one time thing. Wanting to feel his big cock inside her again, she negotiates with him. “I won’t tell my mom if you fuck me again” she says smiling. Her step-dad laughs and says that sounds more like blackmail but he agrees to her terms. Harper tells her step-dad this is the best birthday ever…