my best friend is a jerk

my best friend has turned into a total jerk lately. he has literally taken the only thing i cared about and then threw it away like it was trash. he’s taken the past two girls I’ve actually liked from me one of them while he was still hooking up with my ex-girlfriend. he’s stopped talking to me completely and still tries to hang out with all our other friends without me. granted we all talk about it behind his back and we all kinda hate him now. i had decided this guy was gonna be my best man at my wedding. we’ve known each other for 13 years and he has decided that now would be a good time to stab me in the back. multiple times. good luck man. hope you do well in life. cause you’re gonna have to do it without me.