"Civilization would have it something like - if a woman says no a couple of times, you're supposed to stop asking and not be visibly not-in-most-preferred-state about not having sex. You don't lie, obviously, you just conceal the overt feedback. She may guess, obviously, and if she asked you'd just tell her. It's not about a deception, even a deception by concealment; the point is that you're not exerting a direct pressure on subverbal parts of herself by being visibly sad at them."
"It can be different for a woman pestering a man, but only to the extent she has extremely reliable information - which basically means, information directly from him - that he's highly conformant to the masculine gender-'trope' and that sub-'trope' in particular. I would have provided you with that information just now, when I told you that I was enjoying being asked and saying no."
(Keltham is just using dath ilani 'trope' as a loanword into Taldane, at this point, since the corresponding concept in Taldane simply doesn't exist; if it is sufficiently burned into Carissa's memory, she may happen to remember that, whatever it is, it is something above all gods.)
"Civilization is all very - structures to make sure that people end up having the power to protect themselves in their sexual relationships, and the realistic ability to decide for themselves without that taking a lot of mental work, and common knowledge that everyone has in fact been trained to protect themselves that way and passed some tests about it, all so that people can be given the responsibility to decide for themselves. So long as you're following those rules, in a world where you know everybody else follows those rules, it means you don't have to worry about them on their behalf, or try to protect them more than they protect themselves, or doubt them when they say yes. The typical dath ilani man - has a great horror of accidentally harming somebody, like that, and the rules are there so they can be less scared after somebody says yes to them."