it does happen. You're young and you just got to college - which exposes you to a many hotties. Do your thing and don't worry about it - this will be the next four years when it's acceptable to be a little selfish.
this might be old news but...cheating happens, even if you are a "nice girl". But if he's not what you want then end it before you both waste your time
my boyfriend just broke up with me because im going to a university across the country. after two and a half years, i wish my boyfriend had trusted me enough to get there before breaking up with me.