Yes, that is one of the places where I veer most heavily from it, with the reason for it simply being that it's not the story I want to tell.
It would put all sorts of hurdles between the interactions that characters can have. Everyone would have to feel everyone else out even more than they already have to do as characters who, in many cases, don't have any prior history, and who are confined in a small space with dozens of other people and very little, if any, privacy.
And that is not what I want to tell in the game. It still has a heavy adult focus, so I just don't want to have that particular ball to juggle along with all the other balls that are already being juggled.
It's not a casual sex world, mind you, but just a case where everyone's bisexual, everyone is fine with everyone being bisexual, so I don't have to worry about adding complete secrecy to pretty much every single relationship.