I need help with dealing with my friend!!!!! TELL ME WHAT TO DO!!!!?

Ok so i have a friend that i met last year, i think he's gay so he has no interest in me whatsoever but to be friends. He has a group of friends at school from last year, when we weren't friends. He sucks up to this girl from his "group", trying to impress her and stuff, he's really nice to her, kinda like a little dog following it's owner. It's so desperate. And he only hangs out with me on weekends and when he comes over the only things he wants to do are his things he likes to listen to the B-52's and read agatha christie novels, and watch Kath and Kim. And we started this band a while ago now and the only songs that he "let's" us play are B-52's songs!!!!!!! i never get any say!. We had another member in our band (the guitarist and my best girlfriend) and she hates the B-52's so she left and he now says that the reason she left was because she wasn't good enough and wasn't willing to learn the songs, she's a brilliant guitarist!!!!! it just wasn't her style of music ok? When he's not hanging out with this girl at school He's treats me like s**t. For example if i ask him about an outfit he'll say sarcastically that it's terrible, then laugh and say i'm kidding, he's got and annoying little brother that i HATE. He only ever comes over to my place and if he can't and i say can i go to yours? he throws a tantrum. E.g. yesterday i told him no because i wanted a break from my place and to go to his for ONCE and his mother was on the phone saying that he was sick in bed. He then texted me a couple of minutes later asking if he could come over and i said no. And then to get him to let me go over i told him that i got some new clothes, (he loves looking through my wardrobe) and he replied with: ohhh what do you want me to do?? throw a party? we haven't spoken since. But i had a fight with him before and he was going on about how i was so self centered and had over reaction issues and are annoying other people as well as him, i asked him who but he didn't tell me i told him about how we only ever do what HE wants to do!!!!!! and he didn't say anything on the matter!!!!!! HE'S PISSING ME OFF AND NOT PAYING ME ANY RESPECT!!!!! and did i mention he's awful to his mother aswell? so please if you have read all of this thankyou WHAT SHOULD I DO!!!!!???? DITCH HIM???????