So Confused..

[dimecho]

Glad my first post gets to be a confusing one.
I have been best friends with this guy since last October, and we have both had feelings for each other since last Spring. We hung out everyday, spoke all the time, and just enjoyed each others company. We were pretty much inseparable. We began dating in June, and things moved really quickly because we had that great friendship before hand. Everything was going fantastic, until one day this past October when he broke up with me out of the blue, saying that we were better as best friends. It was a very intense relationship for a 22 and 21 year old, both in college, and things were perfect. I was devastated when he broke up with me, as I didn't see it coming at all. We went back to being friends and still talk everyday and hang out a few times a week, but nowhere near as much as we did. About a month ago, he started seeing someone new, a 19 year old and he also made some lifestyle changes, eating meat and drinking more, as we were both vegetarians and never drank. She's my exact opposite and looks and acts very young, and I just don't understand the attraction. But he and I still hang out a ton and our friendship is almost to the level it was pre-dating, but I love him so much and this new relationship is killing me. I have put no pressure on him about his changes, as I've made some of my own. I just don't understand what is going on in his head, and he won't tell me. I've been playing the best friend role, leaving the ball in his court to come back if he wants. I know not to expect anything, but I just want him back. What should I do, why is he doing this? Any insight from anyone with more experience?
Thanks.

[Gigabitch]

The question is, why are YOU doing this? Look at your experience and tell me it isn't just another example of the rule:

You can't be friends with your ex.

Maybe one person can be friends, but it never really works for both people, and it's definitely not working for you. Look, he broke up with you. He should have done you a favor and severed all ties at that point, but he didn't, so you have to. This is not good for you.