I really don't have much to suggest. You can't control his behavior. You can set boundaries as to what you find acceptable behavior but that requires being willing to take action if those boundaries are not respected. Perhaps if he comes home and you find you cannot take it with him around you have a friend you can go spend the night with? How much longer is th elease? Can you talk to the landlord about making a change? If you must remain in the same space, is there a room where you can isolate yourself and stay away from him and his drama?