I think it's important to remind that this is taking place in a game (in-story), which is a very different thing than typical fantasy h-games. Social norms are different in games; I feel like everyone on this site would understand this. Get irritated at a friend in real-life and shoot them in the back of the head, and you ruin both lives; shoot their character in a FPS because they keep hitting you with friendly fire, or just because you are bored, and nobody even comments on it. Do I like Lydia as a follower in Skyrim? Yes. Have I fuz-ro-dahed her off cliffs a couple times to see how far she'd go? Yes. If she was played by an IRL friend? Even better.
All the characters in this game are aware they are characters, and/or there aren't even humans behind the characters. So the "flip-flopping" in such circumstances is less egregious than it would be if this was supposed to be real-life (even by h-game standards).
In fact, and I might be ahead of the developer here, but I see this game as an interesting little study about what happens when people are free to act without consequences. As more and more of our lives go virtual -- we're known by our resumes and social profiles, we meet our spouses through dating sites, we remember birthdays for 1000 people as if they were best friends because our phone pinged us, etc. -- the lies get bigger and the consequences get smaller. What happens once we can do anything to anyone, and have anything done to us, with the only consequences being the ones we imagine? I suspect I have many friends who would happily bend each other's avatars over tables for a way to kill five minutes.