He asked for my number, but never called? 10 points!?

he might be a lil shy to call you, most guys are shy to call a girl for the first time(I am talking about the good guys and looks like he is one of them). So you can give it a start. Just say Hi! and ask him how he is? Don't talk much because it is the first time. Tell him to call you if he needs to talk. After this is a case of love and if everything goes slowly everything goes good. :)