I agree putting a boundary on him and enforcing is probably not realistic. It just makes me feel like a doormat that he is showing so little regard for my feelings. I guess this is him trying to get a reaction out of me, so the best course is no reaction?
Maybe but more likely he does not even think about YOU. His focus is on him! Think selfish teenager.
Yes no reaction is fine.
Are you providing for any of his needs? Cooking, cleaning, laundry, money?
