I hope this is the case. In this first playthrough im playing in a way that i try to remain faithful. I didn't have the MC sleep with the lawyer chick and declined her advances every time, and i also did the same when guys were trying to flirt with the wife, i shut them down. I am not a particular fan of this MC but i don't think the wife deserves to be cheated on or should be having sex with others out of spite. So i hope we can make her decline advances of those frankly creepy guys who all want to bang her, same for the MC and i hope they can make up and continue their relationship together in a better way. And hopefully the MC stops being a dick and stops neglecting his wife's needs or she will end up looking elsewhere.
That said, i have a feeling that we will be forced into revenge sex with the neighbor at least, that ending just gave me that vibe and im not a fan of it. If they force us into things, i will probably end up dropping the game because i hate cheating and cucking in these games. I know its an NTR game but we as players should have an option to avoid it if we want to