Sort of a sticky situation.

You should try talking to him about it - life is too short for regrets. I said talk because you need to know his side of the story and let him know your side. You need to tell him that you cherish your friendship and thought you were better off as friends than being in a romantic relationship. Then you need to ask him if he can handle that - if he can't, there's no friendship to restore. But at least let him know that you don't like to be treated as a stranger, or as-if you don't know each other. That's juvenile and childish, and from what I can tell y'all are beyond that.

have you ever thought that maybe he only was your friend in the first place because he wanted to be your boyfriend and not realy a true friend

Oh man... I dated a guy like that in high school too. We were in the same classes all the way through and, in our last year, he asked me out. He had always seemed like a nice guy and we got along well so I said ok. I should have sensed a problem when we both went separately to our graduation because we had already made plans with our own friends. I mean, it made sense and was the polite thing to do, but was still strange. We dated through the summer between high school and college but really didn't do a whole lot together. He'd come by every couple of days and we'd take a bike ride or just hang out. Then we started at the same college together and even shared a locker. In all this time, I was never once invited to his house and never met his family -- he always came to mine. He never took me out socially like for dinner or anything. We were kind of just "buddies." When I asked a couple of times about meeting him at his house, he would say no. Turns out he had 3 younger brothers and he didn't want them to TEASE HIM about having a girlfriend. At that point, I finally got the message that he had never had a girlfriend before and had no CLUE what to do. He's was awfully immature about the whole thing. I finally ended up breaking up with him because I felt committed to him as a boyfriend but I was never seeing him, he rarely called, I wasn't getting to socialize with him... there didn't seem to be any point to the relationship at all. The day I broke it off (at my house AGAIN LOL), he cried. I felt awful that I hurt him but it was just not a satisfying thing to be with him either. It sounds like your guy was probably embarrassed about "being dumped." You both went out on a limb and tried taking a good friendship to a relationship level. Sometimes, it's kind of like trying to unring a bell, you know? It's difficult to go back. I'd do what has been said so far -- just be the one to talk to him. It's ok to ask him if he feels too uncomfortable to be friends with you anymore. Give him the chance to explain his attitude and behavior and you explain yours. Once it's all out in the open, you're going to know if the friendship is still there and salvageable. It sounds like you still like him and would like to keep in touch... so it's worth being the one to step up and open up the conversation. Good luck to both of you! I hope it works out for you