My boyfriend says he cannot commit himself

I am having a hard time dealing with a recent breakup between my ex boyfriend and myself. After years of him persuing me, I finally decide to go all or nothing in a relationship with him. I moved to another country to be with him(he came to get me), and did everything right in the relationship. He tells me after one month of being together he cannot commit nor does he know why he is feeling this way. I ask him why, or what happend or what is it about me that made him decide this. His answers are always, I dont know, it was not you, it is me.
I am feeling so rejected,sad,not good enough, etc...
It's been 2 months since I left his home, and I cannot seem to heal. What should I do? I try to move on, but I feel I should wait to see if he "misses" me.
Please help.

Men need a break now and then in a relationship to feel OK. If they are together with their partner all the time, they start feeling the way your ex-boyfriend felt.

More about men who need a break now and then.
About men who will not commit themselves.

Letter from a reader: Maybe, he was getting scared of commitment, don't worry though hun, just get over it! Get out there and find someone better.