He broke up with me and is now ignoring me...why!!?

a incredibly long story short I've been with this guy for a year. I'm 21 he's 26. I don't think age has anything to do with it though... He is a wonderful guy but I think has some serious commitment phoebes and issues and has been dancing on the line of "what do I want?" most of our relationship. I've never felt this way about anyone. I love this man and I would do anything for him. But a week before we broke up he was distant, I asked him why he said he had no idea why and was sorry. next day we went out and partied with friends everything was great and we were totally happy. later on he's wasted and I'm drunk. we have a huge fight in public. (first one) he is screaming at me and going crazy and I'm balling (none of which he remembers much). We talk the next day explaining what happened and why. (hes the worst communicator by the way) in the end he broke it off with me, but it was extremely wishy washy and not a very straight forward breakup. a lot of "i don't knows" "maybe we should take time apart" "awkward silences" ...after breaking up he asked me if I wanted to eat dinner with him which is so incredibly weird. of course I said no are you crazy?...

Its been a little over 2 weeks next Tuesday will be 3 weeks. We haven't spoken. I cut off contact because I thought he needed space to figure out what he wants. so far I've haven't gotten a text, call, email nothing. He small talks me at my place of work when he stops by but that's probably just to be nice.. (I work at a grocery store)..the other day he came in asking if I was going to a certain going away party I said I wasn't sure. I ended up going anyways. he came later on. He ignored me the entire night. not even a hello or a smile in passing. I caught his a eye a few times but tried not to notice him. I end up getting very drunk. he leaves whilst I'm in the bathroom and then I cried when I realized he had left. I don't understand how someone you were with for a year acts like it meant nothing. and how can he just ignore me like that!?! :( why is he ignoring me?! I don't know if he expects me to make first contact but so far he's acting as if nothing happened and he's happy as can be and I never existed. it hurts so much and its all I can think about...part of me says give it more space and time the other part thinks he's totally moved on...but its so fresh I just don't understand how he could be so cold and hurtful. This is a small town and I'm bound to bump into him often and it doesn't help that we have the same friends. I want him back! answers please! what should I do and why is he being this way!?
He broke up with me and is now ignoring me...why!!?
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