I agree with the excellent advice you have had here. I think counselling would help, especially, as others have said, as trust (or the regaining of it) is something you have to do - it's not something your dh can do for you.
If you are really concerend about confidentiality (and again, I agree with the others that if you make it clear to your GP, then he should be sensisitve about your concerns), then yuo don't need to go into detail about why you need counselling - just that you are depressed, have unresolved issues, and that counselling may help. A word of warning though - there is often a long waiting list for NHS counselling.
Having said all of that, if you do want to "talk" to your dh, would writing to him be a way forward? You say he is not the type to talk about emotions - but can he read about them? Does he know that you don't think he makes love - that he just has sex? Would he want to do something about it if he did know? Would that help you?
You've put it down in writing here - would putting it down in writing for your dh help or would it just open up old wounds? You could try "writing" him a letter - not even necessarily with the intention of giving it to him to read - but just to see if that helps clarify things in your own head. What (if anything) would you like him to do? How would you like him to react?