It sounds as if he is taking everything- and giving nothing.
In fact, it sounds as if you have either a brother-sister set up, or a mother-child set up. Not a man-wife one.
For me, the deal breaker here would be his refusal to talk about something that bothers you so much.
At the same time though, if a man said to me "we have been there before" I would not let him off the hook so easily. I'd say "Yes, but nothing has changed, and unless you face up to the issue then our marriage may well be over."
I do hope you can see that the way he dismisses your feelings is not a loving way to treat anyone.
Granted, he may have a physical or emotional issue that is stopping him having sex with you- he may simply have a low sex drive. But whichever it is, he needs to at least communicate which of these it is.
Nothing will change here unless you change YOUR behaviour in some ways.
That might mean:
seeking counselling for yourself.
persuading him to have couples' counselling.
giving him an ultimatum that if he won't address the issue in an adult way, then you will be looking at a separation.
At the moment, he has no need to do anything- why? because he can get away with this and nothing changes in his life.
You need to start doing something- not just posting here or thinking about it all.