Frenemy

I'm trying to let go.  I've been thinking obsessively about my former best friend.  As previously mentioned, I have OCD,  He is a very mean, angry person who has yelled and screamed at me many times for no good reason.  He has kicked me out of his house twice.  I'm very angry about all the shit I've taken from him.
As mentioned previously, I have depression.  I've read books about it.  You're supposed to have friends.  I suppose this is why I've taken so much shit from him.  I was thinking, he's a very angry asshole, but it's better than having no friends.  He knows I have depression, but, obviously, that didn't stop him from being cruel to me.
I'll tell the story of one of the times he kicked me out of his house.  He's an avid gambler.  He talks at length about it, which bores the hell out of me.  Anyway, we were watching a college football game.  As previously mentioned, I don't give a fuck about football, but it was his house, so he had control of the remote.  This happened to be a good game.  One team, that had been way behind, was making an improbable comeback.  I was cheering for them.  My former friend, B, became angry with me, because he had bet against the team.  I couldn't believe it.  He accused me of fucking with him by cheering for the team.  He became very angry.  I pointed out that, if he was losing his bet, it was his fault, and his fault alone, because he placed the bet.  He kicked me out of his house over that bullshit.
I could go on and on about what an asshole he has been to me, and perhaps I'll add to this.  But I'm just trying to let go of my obsessive anger.