I Need HELP!! What anime show is this!?

It has been a while sense I have seen this anime and I cant remember what it is called! What I remember is a new male student comes to the school and meets a girl who is the vice president of the school and her brother is the president her brother turns out to be a vampire in the first episode. Oh and the girl was waiting under the tree at the school waiting for the new guy to go on a date with her. Anyone have any idea what I am talking about?