Ok so I have weird girl problem that I need help resolving,so there is this girl that I like were both freshman in college we've talked before and all and we had this seminar class together,and I want to ask her out but the thing is our class is over and I don't really see her at all on campus anymore(huge school) I don't have her number soo how do I ask her out??

We're friends on facebook but I don't want to be a douche and do it over the internet I'm not a nerd or a loser so thats why I really don't want to resort to that but I really like this girl she seems to fit me perfectly....help???