We both will be happy to "give it up" for the other if the other is really horny. Of course, there are limits. There is the occasional evening where My Man is simply exhausted from work, and wants to go right to sleep, and there are days, (usually mornings) where I may have a full blown migraine and simply can't.
But, as a rule, we're both more than happy to make the other happy. And we usually end up getting into it anyway.