The MC will not holding decisions off like "I'm not in the mood"...if only for the simple reason that none of the few male characters with whom you can share/exchange partners (if you wish) will ever make a direct request to your MC. There will not even be a hint from them. So there won't be any choices where the game pushes you towards something (for example, in the form of certain “character requests”). Just understand that in this game, all the initiative belongs exclusively to your MC.
So here, this optional content is presented as an act of hospitality, where the initiative always comes from the host, that is, exclusively from MC. In this game, you have no male competitors, and, for example, the only person who is your old friend and who, BTW, will do you a huge favor by essentially offering very beautiful girl to your personal harem, behaves extremely modestly, and even if you want to thank him by showing hospitality in a such special way (optional), your MC will still have to persuade this modest man, hehe.
You won't see such phrases, if only because everyone knows that you are the sole owner of all these girls. And your power over all your females permeates the entire game and the plot so strongly that such phrases would sound simply silly and inappropriate coming from the mouth of MC. It's like phrases spoken by the abstract “Captain Obvious.”
But until you immerse yourself in this atmosphere, in this game lore, you won't understand what I'm talking about. Just start playing and I'm sure your fears will simply evaporate.