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).
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.
