This jumped out at me because when we started our game we had a very binary mind-set of, "Players will either want to fuck this character, nor not want to fuck this character." And so our game featured a mechanic where you could just turn off a character and move on with the ones you enjoyed.interact with characters in either a non-erotic or erotic way at our discretion but keeps a logical story.
It never once occurred to us in our simple brains that there would be players who would want to continue interacting with a character and not have sex with them. But we learned later that it is indeed something that players want. Unfortunately we've got too much on our plate already to go back and write in new branches that allow for this possibility.
But we've already decided that when this game is done and we start on the next, we're definitely going to account for that option and work it in.
We came at this with zero experience but it's been a fascinating ride learning about the different groups of players surrounding these types of adult games.