Why is he making me feel guilty?

I dont think he is making you feel guilty. That is being accomplished all on your own. He obviously still cares about you and misses you. I remember when an ex gf dumped me a few years ago, I still cared for her and I must have looked like a lost sole. If you still have feeling for him than you should try to reconcile with him. Trust me, if a guy wanted to be away from you, he would avoid you at all costs.