This game does this really annoying thing i don't get at all and that i've noticed in a lot of games/stories with cheating in them.
So obviously the dev thinks there's something interesting there given that so many of the LIs have husbands/partners and are cheating. And of course there is. It's the allure of the forbidden fruit and the taboo, etc. Classic stuff.
But then the author goes and trots out a bunch of circumstances that 'justify' the cheating (shitty partner, relationship sucks, they hate each other, etc), completely nullifying that sense of wrongness. Because of course people in shitty relationships want to cheat. There's no reason not to, other than on technicality. Technicalities aren't raising anyone's ardors, unless maybe they have a bureaucracy fetish.
I will never understand why people so often take the trope in this contradictory, self-defeating direction. Sucks.