It is the wrong solution and the dev has shown why. Opening up a troubled marriage is a death knell from the word go. You need a strong foundational marriage to engage in any of the sharing lifestyles. To do it to save a marriage is the worse thing you can do. It never ends well seen it time and time again. Sharing done properly enhances a marriage's sex life not replaces it. If the dev writes the endings true to life then this marriage is dead with or without Anne's disgusting betrayal.Surely it was one of the reasons why he fell in love with Anne, I don't know if it's because of the translation I use but in the game it's that they're losing the emotion in the sex between them, at no time do they say they don't love each other or do it with each other, They only talk about the wear and tear on the couple and the solution that the mc finds is to share his wife