I've posted about something similar in another thread, and your post has resonance with me, OP
My DH is a wonderful man in many ways, and I love and appreciate him, but I feel as though we have a growing issue about sex. Mine is not due to small children, but I am very busy, plus I have put weight back on that I had lost when I first met him and feel less confident. I also think I just don't want to have sex every night, which I'm pretty sure he would like to do.
My DH doesn't sulk, but I am aware that he feels he's being kept on 'short rations' if he goes more than a few days without. I know I'm risking getting flamed for saying this, but frankly his sex drive appears to be more about a basic physical need, whereas I don't feel that type of need anything like as often. I love sex, but I just don't want it all the time!
I'm not sure what the answer is, as it's something I wrestle with myself - but I've gradually got to the point where I say 'no, not in the mood' and if he chooses to sulk (openly or otherwise) then so be it. I certainly don't see it as a LTB issue (!) and I don't deny that sometimes I have sex when I'm not really in the mood, because I know it makes him happy and he's a good man and I want him to feel loved and valued. It's a tricky subject, and one that I really struggle with when wearing my feminist hat!