Hello and Welcome to CC!
A work colleague was in this situation; she was married to someone who was emotionally unavailable. Despite her having been very careful in assessing him prior to marriage, she proceeded and they have a child together. Sadly, their marriage ended because he would not deal with his issues.
God can fix this, of course, but many Christians don't believe that and so don't seek His help. Also, this kind of thing can be sorted with the assistance of a competent counselor, but only if the person is willing and really wants to be healthy. Otherwise, it's wasted effort and the relationship is doomed. I'd recommend that, if your friend's man is not willing to seek help, she should terminate the relationship.