Lost my best friend what do i do?

My bes friend told me to just f*** iff and stop talking to his girlfriend. Me and he would hardly ever talk but he would get jealous if we even like looked with each other. Me and him hung out alot and we would call each other brother and stuff and we were always there for each other.but his girlfriend told me that he hadnt really liked me as a friend in awhile..ans that he hadnt co sidered me a friend in a while cuz i was so f in annoying anx i pissed him off alot.we had been good friends but now all of that seems fake. Its the end of the year and were avoiding each other. I dont want to end it like this.