I don't recall Tony telling/encouraging Anne to run around screwing everyone she sees, as long as she eventually gets around to telling him a week or more from it happening. I suppose that's why open relationships are so likely to fail, it's so easy to just assume and interpret an agreement to excuse actions (like you've shown repeatedly, you take your interpretation of what's said, and everyone else is wrong).It depends on what cheating is for you
the MC who wants to share her ... so she is not cheating if after having sex with someone she tells him....
Many times she calls the MC on the phone and they talk about what Anne did--and he is the one who pushes her to have sex with others.
I do not think that she is cheating for real because was her husband to push her ... so to say where the cheating begins and where her husband's consent to her fucking with others begins is very difficult
the line is very blurred
In the game the only one Anne fucks behind Tony's back is Martin....
All the other men she will report them to him sooner or later so if she sticks to the plan of telling him she fucked a guy at the spa or whatever this is not cheating because that is the agreement they made at the beginning of the game.
I suggest to read the prologue of TAC... or also Tacos.... the prologue is almost the same in both versions but it is a very important point to understand where and when this story started.
And what cheating means in this story.
As shown through each version of TAC, a woman simply has to give a smile to a guy, and she has whatever sexual relation she chooses. The guy has to work for it, lay groundwork and eventually he might get lucky (Tony has VN magic where he can get pussy at the drop of a hat like with the masseuse, but reality is far from as easy). Point is, it's so lopsided on how much action each partner can get, and easier still to hide things from the woman's perspective.