You don't leave it alone. Doing that will do one thing...not fix the problem. He isn't going to suddenly understand how you are feeling and how you are hurting if you suddenly drop it.
[quoe]how do you put the subject away, how do you stop mentioning it, asking questions...hoping for answers
In my eyes...you don't do this. If you stop mentioning it you effective stop communicating. COMMUNICATION IS THE KEY to turning your situation around.
I know you are down right now, I can feel that from your post...it's only natural, and it's understandable. But if you want your R to work at least one of you does need to keep trying. If you both aren't trying to repair the situation you are in...then you're right back to square one.
Let me ask you this. What would be some 180's in your current behavior? I don't just mean about bringing up the lack of sex...I'm talking about everyday activities, hobbies etc. Are you a home-body? Start going out with friends. What's your style of dressing? Maybe treat yourself a bit to some new threads and kick it up a notch (it'll make you feel better if nothing else). Stuff like that. Do things that are out of your norm that can make YOU feel better...workout (if you enjoy it), meet your friends for drinks and a movie (or whatever).