Good grief, why are you so insecure? This not your boy friend's issue, or the girl's--you own it 100%. You sound very young (that may just be the effect of your insecurity, however), but if you are old enough to be at college, your school may have a counseling service. Working with a counselor on your self-confidence would do you a world of good.
Welcome to the board nkyerema,
Public forums....sigh, so not private.