<human>: Give me the gist of the text in a nutshell

I'm a 24f and my 21m boyfriend of about a year and a half broke up with me today.

He broke up with me because I've been depending on him for my own happiness pretty much since we started dating.  I have no other friends (besides my mom) and no hobbies.  I have terrible self-esteem, am very shy, and am depressed pretty often.  I sent him a lot of "I'm sad" type texts and it was draining for him.  I guess I don't need to spell out any further that I didn't make for a very good girlfriend.

I think I know what I need to do to move on in the long run.  Try to make friends, focus on school more, go to the gym more regularly, and get back into volunteering often.  Keep busy and try to better myself.  None of this sounds appealing to me at all, but it seems like what I should be doing.

I could use some advice on how to feel better in the short run, especially with no friends to talk to.  Accepting that it's over is difficult.  Right now I'm crazily in love with him.   I wanted everything with him, and meanwhile he couldn't even envision a future for us because I'd made the present so unenjoyable.  I'm realizing that I ruined our relationship by giving up on myself and I'm hating myself for it.  I blew it with a really great guy, someone I'd built up to be 'the one'.

I can't seem to suppress these thoughts.

I could also use some advice on making friends.  All I can think to do to meet people is joining a club related to my major.

Thanks for any advice.
<bot>: My boyfriend broke up with me because I didn't try to make myself happy or fulfilled.  I need advice on how to feel better right now, and how to make some friends.