How can i get him back?

There is this guy, we used to be good friends, but one night it changed. We started fighting and we haven't talked since. we see each other at school everyday. Looking at him i wonder why it happened. i really like him a lot. i miss him so much. I tried so many times to apologize, but he just tells me to leave him alone. I said i was sorry that i pushed him away and that i had only done it because i was losing everyone and i thought that if i lost him it wouldn't hurt and i would forget abut him. Turns out i can't forget him and instead of being hurt by him i hurt myself. How can i get him to listen even for a minute? I really want to be friends again. Help