It sounds like he is not going to commit. If you are wanting more than you are getting right now, I'd say you might have to consider moving on. I don't know that he is using you, but it doesn't sound like he can give more than he already is.

I think you might have to sit down with this and figure out exactly what you want out of the relationship with eyes open about what he is capable of doing.

Best of luck and keep us posted.