Dialogues that help ground the playersexuality of individual characters into a more in-universe representation of the sexuality and openness to the player by various degrees of the particular game being played would actually be really nice - as others mentioned, characters all remaining potentially romanacable by the PC, but having dialogue within their relationship texts to touch on it and give it a feeling of realism... it would be more than any other game I can think of has ever done, but it should still be possible. As well as being a grounding element for the companions, it would also serve as another chance for the player to define something about their character, which is always a good thing to add in where possible.
