I actually like infidelity fics. Or I like the idea of them; I can't think of any that I've really liked.
OMG, YES! :D I love them, love love love them. I love reading emotionally angsty fics and when it comes to that, there's no equal to infidelity fics, in my view. I like romance and humor and crack fics too--but infidelity fics are so few and far between that the ones I like I really cling to. I've got a few links to ones I liked, if you're interested:
and here's one I just got from red_day_dawning in prior posts! Sometimes the best way to find other infidelity fics is to write one and see who responds. ;)
The Blue Door, also by snegurochka_lee. I've only just read the first few paragraphs but it's so very promising.
Only the first is Snarry, and though I generally read H/D and Snarry fairly exclusively, I read outside of my pairings if it's infidelity fic! :D There's also this page of links to infidelity fics you can try.
I'm glad you found this true to life! I did try to keep the angst mild in the story itself, figuring that the notion of it would be angsty enough for many readers, but yes--I did want to highlight the prosaic quality of infidelity rather than the sordidness of it. So I'm thrilled at your reaction! ♥