I need help!! Should I talk to him again?? How?

OK, so my best guy friend of a year and half hasn't spoken to me in about two months now. Granted, it's sort of my fault but also his. We went to homecoming together and some drama started there and we weren't as close anymore. He began acting nice and then mean, and then nice and mean. I asked to talk to him to try to work out our friendship at school and he said "OK...we'll talk tomorrow" and then he blatantly ignored me and acted mean for a while until he realized I wasn't going to press the issue, and then started acting nice again, mean then nice on and off. I finally decided I couldn't take it anymore and I decided I wasn't going to make an effort to talk to him anymore - I wasn't going to ignore him if he talked to me, but I wasn't going to try to be around him anymore. Well, basically I guess he thought I was ignoring him and now we both ignore each other even though we see each other everyday. I'm starting to regret it and I wish I could talk to him again but then I think about how mean he has been to me in the past and have to rethink it. He's a senior and graduating this year - should I just wait out the rest of the year and forget about him or should I try to rebuild our friendship again? and how?? Thank you!