If there is no communication at all, it's time to end it. What is the point of not doing so? Tell him he cannot ignore his way around your thoughts and feelings about the relationship and he can either discuss the relationship with you or be left mad and unable to bring it up again because you will be gone.

I got my husband's attention one day like that; started describing my "future" life, where I would be living and what I'd be doing and after a moment he asked, puzzled, "where will I be?" and I explained he'd be dead from his smoking. He immediately wailed, "But I don't want to be dead!" (but has yet to quit smoking).

Figure out what you want and make it known; he can't make it go away because it is what you want and are willing to make happen. Don't talk about him and what he has to do, what's right/wrong with him, etc., just explain what you want and are going after. . . he can go along with you, or not, his choice.