Should I go to him?

i was with a guy for 3 years n he broke up with me 3 mnths ago and for the 1st 2 mnths we stayed friends..hed call and text and we’d hang out.. but this past mnth, ive been goin crazy callin his exGF (whos married and has a kid and is going thru a divorce) b/c he lives in her basement, and i know he has feelings for her.. but im not certain she feels the same way right now.. but anyway, his ex got tired of me calling so much, she always said she didnt mind talking to me, just not every day, well him and i got in a big fight on thursday because i went in to her wrk to see her, but she was busy so i left and went to a bar.. my ex calls me after im already drunk and tells me i shouldnt have gone to see her, im thinkin why is he callin and stickin up for her? so one of my guy friends called him and left him a VM which he called back 4 times after and left a vm sayin it was over for good, etc..

I apologized the night I got home from the bar.. I told him that I care too much about him and that’s about the only thing I can say to back myself up for my actions..

the next day he told me I fd up and that I can thank my bf for it…then i saw him at work and he just went off on me and walked away. I know he’s really really mad…. But I havent seen or heard from him in 4 days….. Should I wait for him to contact me or should I write him on myspace or something and tell him that im sorry for my actions and that I havent been a good friend? I really want him back.. What should I do?