I must admit I really feel weird when it comes to this diagnosis. It would make a lot of sense, BUT the point is he gets "manic" after certain amount of alcohol, and that is pretty much every day between 8 and 9 pm. And he also lies a lot and is intentionally hurtful. He starts neglecting himself when drinking is endangered. He is also very calculated when it comes to debt and it just occurred to me that he was just testing my reaction about the loan, which, he can believe it or not, I'll be able to pay. He is not even aware how much money he wastes on tobacco and alcohol (the loan + health insurance premium!)
But there is an officially diagnosed bipolar person in his family.
Again, it would explain a lot, but it is not an excuse.