Whats his problem?

Yeah I'm agreeing on this one too, he is afraid to commit to a relationship. Some people are not ok with things that are entirely right, they feel there is something wrong even when there isn't. Or afraid something will go wrong eventually, so they push a person away before they get too close as a defense mechanism. That whole "I think your great for me" line is a load of horse sh! T because he would try and make it work if he really felt that way about you.

These are his issues that he needs to sort out. I wouldn't even try and deal with it. Start acting not interested entirely and wait for him to come back to you if he really wants to make something out of this.

Ew! I don't like how he is treating you one bit! You can't just connect with someone like that and get close to them and then; at the drop of a hat, blow them off! How are you ever supposed to trust him? I feel really offended by this part:

Then he said "When things start to get too serious I back off and take it slow and this is just the way I am, I wasn't looking for a girlfriend even though I met you and think your great for me. "

What is that supposed to mean? It sounds like he is using you; like he has you to a limit and then when he is done he drops off the face of the earth. Taking it slow is one thing, but ignoring you is something else. That is cold, mean and nasty. You need to make it certain that you will not be treated this way. And that there is no way you will ever trust him like this. Can you imagine if you had an emergency and you needed him and he wasn't picking his phone up? Girl! It's time to lay down the law!

Maybe he was more interested in the chase and not the prize. Some guys really love the thrill of the hunt and once they catch their prey...they get bored and want to crave the hunt again. He sounds like he's afraid of commitment.