My husband did the same thing. At one point I sighed and said, "I'm exhausted but instead of wooing me and revving my engine, you decided that the best way into my pants was to pout and whine like our four year old. So sexy. Oh baby. My pants are just falling off for you right now. You want a piece of me today too? Fine."
And I dropped trou and bent over for him. He said, "I don't want you this way. I want you to want it."
And I snapped back at him, "Then MAKE me want it for crying out loud. THIS is not the way to initiate sex. Have you forgotten how? Is that what the problem is?"
"It didn't used to take so much to get you in the mood, and now, even when I try you just brush me off." he'd say quietly. "And I miss it when you used to come looking for me. It seems that now I'm always the one who comes looking for love, every single time."
"Well, maybe that's the crux of the issue right there. I don't twine sex and love up into one thing. I can love you to bursting without getting sticky, but if sticky is what you need to feel loved, then maybe we just have to 'do it', whether the mood has struck me or not. Let's try it and see." and I waggled my bum at him.
He took his opportunity and I suffered it like any other chore that I do around the house. Vacuuming. Dishes. Whatever. At that point it was all the same. I faked my ardor because I just wasn't feeling the same passion he was, but he felt loved and cared for and I felt good afterwards, the same way I would feel after a job well done.
Just like I never regret my clean kitchen after doing the dishes, or the sparkling toilets after scrubbing them spotless, I did not regret this less than honest sex.
I understand that he desires physical contact far more often than I do so after that little fiasco, I do my best to tend the garden of his swollen feelings so it never devolves to a point that he feels he needs to beg for contact.
He has also made an effort to rouse me to the same passion he feels when the mood strikes him. Sometimes it works. Sometime's I'm too tired to match his fervor so it's a really good thing he's prepared to do most all of the work.
Also, two times a week? He's getting plenty! We do it about four times a month. If he wants more, hand him a bottle of lotion and a box of kleenex and tell him to have at it.