When my former h was doing this, I would just ignore what he was doing and tried not to react to his disrespectful behavior. I eventually began to look at him as a roommate and nothing more.
Have you given any thought to the fact that he might be doing this to get you so angry that you would say something...hence a fight would happen? Sometimes they do things like this to get us to pick a fight w/them to justify why they are doing stuff and then it helps them to open the door and leave.
Sit quietly, do not react to his poor behavior. He's a man/child right now and doesn't think about anyone else but himself. Let's see if he continues this behavior after Christmas. At his age, he certainly can't continue burning the candle at both ends w/o getting run down and/or sick.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
