I'm not with him, he dumped me. I'm really not good enough.
What I see is almost a codependent situation; you were wanting him there when you were in hospital but he doesn't sound like he's very nice to you at all.
This isn't what real healthy relationships are like. Now that you're out of that one you are all set up for living on your own and getting strong again. Then maybe you can find someone nicer, but you're very young, and maybe you can give it a few years before you try to find someone.
My mom & dad have been married since 1989. They were just really good friends--and here in the 21st century they're still good friends. Find yourself that kind of situation.