Ugh, now I realize I have no certain suggestions, just commiseration (for ex, I LOVE Golden Girls, but Stan in general can be a trigger, there are multiple cheating storylines where the girls are wittingly or unwittingly APs or BS/BGFs, plus jokes and so on-- when I was rewatching the series, I had to skip several episodes or tolerate the one-off jokes).
I was going to say I THINK the amazing Derry Girls (which I binge-watched a few months ago) doesn't have any infidelity, and I THINK that may be technically true, but there's definitely an episode (Season 3, Episode 2, I think) that....
TRIGGER WARNING/SPOILER BELOW
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hints at the strong possibility a character is cheating (they turn out not to be, hilarity ensues). I didn't find it especially triggery or distressing-- perhaps because it's telegraphed that it's probably going to turn out to be an hilarious misunderstanding-- but it was uncomfortable.
That may be it-- and I've just confirmed it's not actual cheating and that might be enough to reduce tension in watching it-- so it depends on one's tolerance. Anyone who can think of another storyline/etc. that involves cheating in Derry Girls, please weigh in, though.
If you decide to watch, speaking of subtitles... If you are not terribly familiar with Northern Irish accents and slang, you might want to turn on subtitles/closed captions. I (American) did for a few episodes until I got comfortable understanding 95% of it, at which point I turned them off because I'm a very fast reader. I found that my finishing a line even a half-second before the actors finished speaking it interfered with their incredible comic timing.
I think one of the reasons I liked it, related to betrayal recovery, was that it takes place in the mid-late '90s, around the time I met WH, so it reminds me a little of who I was before him, too.
It sucks that we can't fully enjoy things with the same innocence. I will say the small consolation prize is that we have an even more empathetic understanding of what it's like to be betrayed... which means we can see how normalized/trivialized cheating is in popular culture and call it out and/or be compassionate to other BS/BPs about not exposing them to those triggers, etc.