I'm familiar with the feeling. About 13 or 14 years ago, I was in counseling with an NLP trainer/therapist. One of the things I realized was that I was holding on to my weight to keep from having to get into social situations, since I didn't have a lot of resources when it came to dealing with the opposite sex. I dealt with it in part by learning to dance, which gave me a way to meet women in a structured situation ("May I have this dance?").

As a college student, do you have access to any free counseling services? Alternately, you could do what I did and learn to dance. I don't know that it would work as well for a woman as a man -- but it can't hurt!