Is there any treatment for a man who is cheated by his wife of two childrens and become crack.?

even after the wife come back to normal life ,the man cant love like earlier,cant belive the commitments again.cant be comfortable like usual relation,dont care for any think even self routines.some time cry,sometime get violant.almost silent,no interest in job and career,sleeping in night with difficulties.mind swing and flactuating.what is this stage ,is it normal or abnormal.what can be the severity.