One thing: you said you were upset he didn't tell him he had bipolar because you ended up treating him like an equal because of it. That's harsh! Maybe why he didn't tell you even, bipolar or not, the guy should be treated like an equal. Patronising him, letting him do what he wants with bipolar as an ultimate excuse for bad behavior and playing into his troubles with sympathy would only make things worse. That's disrespectful.

Second, and on the same note, guy is a mess. Taking his sleeping pills with energy drinks/no intention to sleep? He's just getting high. It isn't because he has bipolar and "needs to sleep" "doctors orders".