Hi - I remember being that person in school.
and having and losing your first love is rough.
Does your college have a counselling center where you could possibly get someone to talk to, or you could get a therapist?
Making and keeping friends is not easy for everybody but it can get easier. I don't have any childhood friends (I'm in my 40s) but I do have friends...mostly people I met at work, as I'm also a workaholic : )
Do you ever ask anyone to do anything social - sometimes you really have to push yourself to be a good friend - friendships take as much work as any other relationship - they don't magically happen. So if people ask you to go out, go, and have a good time. You don't have to drink (i don't either) have some soda or something and try to just laugh and enjoy.
there are actually books you can read on how to do better in social situations - Even the 7 habits of Highly Effective People can be a really good help.
It will get better.