oh help, bff problem, cant get over him Options

[mary death]

ok so heres the deal, my best friend and i used to get along great...untill this summer. He was best friends with a whole lot of girls, and i was always the last one. i was his safety net and he would only talk to me if no one else would hang out with him. i was his last choice. So this August i called him and told him i couldnt deal withit anymore and i wanted to stop being friends, and he didnt really understand and he never really accepted it. Ive told him numerous times since then that i cant handle it and i need to be left alone (he was my only real friend) but he doesnt get it.. I dont haveto see him all the time anymore cuz he goes to the public high school in ur town, and i go to a private school, but i go back to the public school after school every day to help with the stage crew for the play. hes in the play so i do see him sometimes, and everytime i do he waves sarcastically nd wont leave me alone. Im thinking about quitting crew because i cant take it anymore and hes harrassing my other 2 friends and is mean to them now too. I know i am giving him way too much power over me by quitting crew and hating him, but i miss his nice side. but there is no way im ever going back to be his friend. what should i do, and how can i get over him?

thanx,
mary