Perks of being a Wallflower.

Charlie's sister was getting serious with her boyfriend who was over at their house a lot more now. Charlie had caught them naked in the basement and his sister said "get out you perv." Then the boyfriend and his sister got into an argument where she called him names and then he slapped her. Charlie's father went over to the boys house and talked to his parents. He said that he didn't want their son to be with his daughter anymore and that was that.