I'm really sorry to hear about your breakup, but hopefully you'll listen to my story, i'm a girl who knows about bad breakups.
First of all, he's breaking up with you because it's not what HE wants? Sounds like a selfish little boy to me, "I don't get what I want/You're not doing what I want by going to my shows" that's not right.
I dated a guy for 8 months who treated me like total (add word in here). I wasn't a priority in his life, and he was still talking to his ex of 2 years who moved to Texas. I would find e-mails, text messages from her saying that they still loved each other, and it would break my heart. I would spend my nights crying, and he would put me down, and verbally call me things that no man should call a girl. About 3 months before I moved down here, I decided to break up with him. Believe me, I thought I was in love with him, I thought he was the only man in my life right now who I could get and who would REALLY LOVE ME. Funny thing is, he didn't love me at all, and I didn't realize it until 2 weeks after we broke up and he was already dating a new girl. Of course, he begged and cried and said "Please, Please don't leave me I NEED YOU." I said, "You need yourself" and left him.
But, now that I think back, I don't want to talk to him anymore. You never realize how selfish or how bad a guy is until after you break up with them. Now I know what I want in a guy, and I do regret staying with him and putting up with what I did. But, now i'm with someone who treats me the way I want to be treated.
Either way girl, don't take it hard, and don't blame yourself even though he might be blaming you. A new day comes and in the words of Hilary Duff, "Laugh it off, let it go and when you wake up it will seem so yesterday, so yesterday, haven't you heard that i'm gonna be okay"