Are we doomed?

Are we doomed?

We've been going out for five months- we rushed into everything but as willing, consenting adults. His ex is still in love with him. He is over her and has not had a solid relationship with anyone, since her. Their relationship was packed with volatility and infidelity, on her part. His son struggles - loves his mother but wants to spend his core time with his Father- so his father is his base.

We got back from visiting (and me meeting) his family two weeks ago. He asked for space the minute we got back, indicating that I am erratic and that I need psychological help. I agreed. I have gone to see a therapist.

Question - how does all of this make him not want to even kiss me. He refuses to touch me. Says he just can't. He does not want initmacy- it has only been five months. Is he cheating? If not, what does this mean and how do I deal with it? Is there any hope for us?