Are you joking? This is one relationship you need to get out of, and you have the perfect opportunity now.
The way I see it, if your partner doesn't bring out the best in you and make you feel good about yourself then they aren't the right person to be with. This guy spectacularly fails on both counts, and in fact makes you feel BAD.
End it. Go on your course, meet loads of new people and widen your job prospects at the same time. I understand this won't be easy, particularly if he is the clingy/aggressive type, but it's best for both of you. You'll feel so much better in a few months if you do this, I promise.
Cxx