NC.
DW and I have been going through some issues, partly (not wholly) stemming from a lack of sex and intimacy in general. We both have noticed these issues and both want to change it for the better. I think/hope we're heading in the right direction on a lot of ways, talking more etc.
Trouble is, when it comes to sex, DW has never liked to talk about it. What I mean is, any flirting or suggestion of sex (eg flirty texts, or suggestive talk, eye contact etc) makes DW think there's an 'expectation' that we will DTD later and that puts her off. FWIW the 'expectation' for me is part of the allure of sex (ie the physical act in a way is just part of the whole thing), but I can see maybe why DW wouldn't feel the same about it.
As a simple example, if someone said to me in the morning "let's have sex tonight", I'd spend the day excitedly looking forward to the night. DW would spend it getting nervous and psyching herself out. Not saying you should regiment your days like this, just an example.
How do you try and work on your sexual life when talking about it seems guaranteed to put one of you off? Not talking about it isn't going to work, but talking about it doesn't feel like it will either...