Tell him he can go stay with his friends then.

He didn't come to see you (so he says),is making your life miserable while he is there and refuses to discuss his feelings either with you directly or though a therapist.

Sitting on the couch, being snippy, solves nothing .

Until he is mature enough to talk about his feelings and can accept the fact that you were mentally ill, i really don't see an upside to him being around you.