Not cool at all. He obviously isn't inside your head and can't possibly be understanding your struggles with alcohol. I think it would help to sit him down and explain to him why you aren't able to drink, what alcohol does to you and why you can never drink again. If he needs to read an article on it, print it out for him. Whatever you need to do to get though to him. Then I would let him know how you felt tonight so you don't build up
Resentment. Get it all out. I hope he apologizes and I hope you never have to be put in that situation again.