Good Morning Leigh Ann
Good to hear from you. Do you have some major projects he could work on around the house, paint the house, something that needs fixing? Does he work on cars? Anything he could do that would make him feel productive.
Any chance he would see a therapist?
I understand your "to much closeness issue" and this may call for sitting down with him and telling him how you feel. I know this may scare you as you don't sound like you want to lose him but allowing him to continue as he is will not be helping him in the long run.
I wish I had more to offer then support. Keep on talking to us for your own peace of mind.