I don't know what to tell you, other than you aren't the only one who feels this way, and you aren't the only one who doesn't know what to do about it.

My husband is very kind and thoughtful and he's a great lover. I just really don't care about sex much. Hugging and cuddling? Oh yes!! but sex? No, really, not necessary for me, thank you very much. It's not BAD and I enjoy it when we do it, but I just have too many bad associations with sex and I really just don't want to.

Sorry you're feeling this way. It's hard. especially when you're with a good partner...