Very well. Here's one of the three I mentioned. You find the others on youtube.
SH makes it clear that she would have been okay if Tav asked first. Asking first = setting boundaries on the relationship = ethical non monogamy.
Edit: would it have been to have a longer discussion about this in one of the "I want to talk about your relationship" options? Yes. Do I want Larian to revise that in lieu of fixing the end game? Hell no.
