Forget the anniversary stuff, lack of intimacy would be the deal breaker for me. I am lucky to have that in my marriage, even though we are older. Sex and Intimcy is the glue that kind of holds things together, I can't imagine being married without that. What is the point then? Just to have someone to go out to dinner with once a week? You might as well be single, get a cat and make friends with your vibrator, and not have to put up with his issues. It's a major red flag this early in a relationship that he is just not feeling it.
Maybe it's time for a separation while you think things through. If he doesn't see it's a problem and is not willing to deal with it are you ready to have a marriage without that?