My "Friend" is a bit ...........?

I am in 9th grade and I have been friends with this person since kindergaten but he's a bit strange. Throughout elementary me and him always use to compete e.g. the highest mark in a spelling test or whatever his parents are really pushy always tellling him to do better were mine are laid back. Well when we got to 7th grade and moved up he was picked on because he's slightly weird and doesn't watch tv and socialise. I always stood up for him and helped him out. Then at the start of 9th grade he started getting funny with me, he started playing soccer and socialising. Eventually he got in with the popular people and convinced them that I was gay or a weirdo or something. This involved telling them to hit me but being really sly about it I reckon I could take him in a fight and he knows it he's never hit me himself but convinces other people to do it for him. Recently as him and two other friends from elementary get the bus he has started telling them to play yellow car as he is pretty weak he gets one of them to punch me for him this results in me getting loads of bruises which results in me telling them clearly that I'm not playing but they still carry on. The other friend from elementary who doesn't hit me who I used to hang with in grade 7 and 8 has started going to his house and not calling for me I think he has been convinced that I'm gay or something by him. I'm just wondering if theres something I can do and oh yes he collects random stuff like empty lucozade bottles he might have OCD? I was just asking for thoughts thanks.