For shits and giggles, sure
I'm always a sucker for a redemption story, so even the characters seems like a unrepentant "slut", she still stands a chance, as long as they don't do anything with other characters (including flirting). If any of the characters have been unfaithful, even if you don't get too see it, and even if it's waaaaay back, there is no coming back from that. Fucking hate ntr (and sharing) lol. That's why I'm undecided as what to do with the ex, sure I wan't to destroy her in every way imaginable, but do I really want to fuck her to achieve that? Not sure...