I don''t know if you''re still checking this, but you say he''s Bipolar. Then, he isn''t supposed to be drinking, especially if he''s on medication. Also, it''s common knowledge alcohol, drugs, or any other stimulant causes an unbalancement. Talk to him when he''s sober, and quick. Don''t nag him or try to tell him how he''s "dissapointing" you or something like that. Make him feel un-judged and loved and get him help. Talking to a therapist helps and if you don''t have insurance there are other ways, too. Also, try to get him medication if he needs it. Legally, though.