Haa, I just got around to reading all of this, and honestly... I just kept thinking how delightfully trashy it was. I get it, cheating sucks, but these characters were so one dimensional that for me it was hard to care about all of that, I just liked the juicy fabricated drama. Kodama really likes to draw what she personally likes.. which I can both respect and appreciate that.
Is the anime worth watching, to those who liked this? I'll probably check it out regardless, unless it's cringe worthy. Aw hell, I'll still watch it.