It stinks of "being used."...Been there, done that, but glad ur out of the relationship, and don't even think of going back into something like that!
Problem with "friends with benefits" is they never, rarely ever work when one starts having deeper feelings. Then jealousy rears it's ugly head!
Get out and keep urself busy with ur schooling, etc., make new friends, and I would forget about the "friends with benefits" thing.....casual sex (with protection, of course) is much better......better luck down the road!