I understand what you want from him but it doesn't work that way. This IS your problem and IS your journey and he doesn't have to be a part of it. It sounds to me like he's treating you like an adult.
I highly recommend seeking out other alcoholics that understand and can support you and give you the validation you seek.
What concerned me about your post is that he offered you a drink. He will have to understand that he can't do that to you. He doesn't have to truly understand addiction or the "why" but he does have to understand he just can't do that to you.
If you were a vegetarian and he made you steak for dinner it would be beyond insensitive and rude. Offering you a drink is the same thing.
However, you have to make sure you've been clear with him on it. No alcohol, ever. Which means YOU have to be committed to it as well. You can't expect him to read your mind. I've quit on Tuesday but I'm drunk on Thursday. Flip flopping will confuse anyone AND cause them not to take you seriously.