I beleive that unless he is graduating from the HS, the only way he can go is with a date that attends that HS.
I hear ya on that they always turn the focus of fault away from themselves, blame it on someone else, and become the vicitim in their eyes. My difficult child is 22 and still plays that game. I dont react to that anymore because it is pointless, and they do get their jollies off of you reacting to it.
So, back to what do you do. Wouldnt help him cause that sewnds wrong messages to you daughter that has the positive point in your life. You owe him no explanation. There wont be much you can do to stop him if a girl asks, adn pays his way except,. maybe a head up to her.
Jen