Have named changed for this. Just in case DH does know me on here.
Aren't lots of relationships prone to this, feast or famine and occasionally somewhere between the two? A long spell of celibacy means that when they don't have sex, a DP feels like they're rejected. Even when they do get intimate, and it's amazing, they ca't wait for the next time. Until that happens again, whatever the delay or postponement, it makes them feel unattractive and undesirable.
Newsflash: realistically, unless you both have the same libido, one of you is likely to be disappointed now and then.
Maybe when we dated, maybe before our 3rd anniversary, certainly before our DDs we found more opportunity. Perhaps I changed, perhaps he married me thinking hey we're so attuned, perhaps he did think we were identical in libido. Well he used to cook for me, he used to buy flowers, he only had eyes for me. Guess what, time passes, what we did to attract our mate, that shiny persona, can fizzle out.
btw when people say, oh but the more you have sex, the more you want it, personally if I am worn out and not in the mood, guess what - I still won't fancy it. And the "getting wifey in the mood" bottle of wine + foot rub tactics will not automatically succeed either. I want to participate and enjoy the moment not be there thinking do get on with it so I can sleep.
What is your definition of housework. My DH used to work away a lot. He got used to 5* hotels and room service. As a SAHM my priority was childcare and then keeping things ticking over domestically, 24/7. He was sometimes critical of things I hadn't done but I wasn't paid to run a hotel, when he came home he was still capable of using his hands and legs. By reasonable standards we lived in a clean home, there was food available and the DCs weren't raised by wolves. If he's too tired to fix something or bathe the kids or put his own stuff in the laundry basket, don't I get to choose whether I feel up for giving a BJ or intercourse?
OP I hope you aren't afraid of change, ime things can improve as the DCs get older, don't ever get to that point of thinking well, to keep him happy, I should go through the motions; that's killing.