(((KP))) - He's just trying to string you along. I really wouldn't be surpised if you get another letter, after his imagination has gone wild, something along the lines of "oh, so you're so busy with your wonderful life you don't even have time to write me back? Just forget about me...obviously I never meant anything to you...quack quack quack". At least, that's what a lot of A's tend to do when they finally realize they are losing their enabler.
I agree with bookwyrm..write it out in a journal or a letter you have no intention of sending. Get it out of your head and onto paper or computer then let it go. The BEST way of making your point to him, is not saying a word. He's still drinking and he still wants things his way...you in his life, but him doing what he wants to do.
I know these types of contact are maddening, but the more you don't respond, the faster he will, hopefully, leave you alone and let you get on with your life.
Hugs and prayers!
Amy