I saw a movie that was 2 stepbrothers, the girl was the rich one and the boy was the poor one.His father married(?) her mother. In the school he fell in love with director's daughter and he was trying to get her.He knows that his sister doesn't like him, and she knows that he doesn't like her.At the end, he finaly got the girl but all was a lie, she was a friend of his stepsister and it was all a prank. Also, his sister was trying to make a virgin studengirl..a bitch.
I hope you guys can help me find this movie ;)