I might sound crazy for saying this, but I'm genuinely looking forward to see where this would go.
This can go a lot of different ways, and it feels like this could legitimately have some kind of potential for a good story.
Question the morality of the whole thing. Give more interesting personality to the side characters so the readers will actually care about them. Make the plans of the MC fail once in a while to create unexpected situations.
Of course, I could be hoping too much, and this is just supposed to be some slop the author puts puts to cater to cucks, or people who fantasize about having an affair.
What do you guys think? Could this kind of plot actually be interesting if done correctly?