It would've been much easier if wifey was just a bitch
But no
She was dumb all along
And that's...worse...better...idk anymore, my sides left the orbit noneheless
kinda makes me think the whole "infidelity" part is a means to humor, rather than a serious facet of the plot (even as one of the three main characters is gunning for it on some level).
that character in particular turning out to be a gigantic girlfailure maiden-in-love with the ML, sorta cuts through the severity of her intent.
the wife not actually being
BAD toward her husband, diminishes the "impetus" for him to fall to temptation.
and the husband was just generally subpar in a lot of ways, in the eyes of everyone around him - but he's now turning some aspects of his life around and garnering notice and even admiration from some of those same individuals.
We've got the standard fare of misunderstanding/lack of communication that we see in all manner of comedic manga titles, and
that facet is currently carrying most of the narrative tension.
Ultimately...I sorta see an endgame where, via the coworker fitness nut, the husband fixes the problems in his life and betters himself and his self-image, which would have ripple effects that mend his marriage, and he and his wife end up happier and closer together. I dunno where that leaves his coworker/blackmailer/admirer, per se, but maybe she also finds some measure of happiness in not fucking him, but...I dunno, spins it into a career built around bodybuilding and opening a business, or something.
I don't know if that's at all the goal of the author, but the
tone of all of this is more wacky and lighthearted, than it is serious and sordid (even with the latent threat of adultery still hanging in the air over multiple characters). So this heading toward a "happy ending" for everyone doesn't feel impossible.
But, we shall see, of course.