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My friend is classmates and friends w the guy my ex cheated on me with and I'm q unsure what to do. I keep seeing her story on my insta since we're q good friends, but sometimes he's just in the background and it feels q bad when I come across it. Otherwise my friend and I are on good terms w one another. I can't ask her to "unfriend" this guy cause their batch is small and so quite hard to avoid each other. That said they're all splitting up to go into their different job postings so maybe she will post less of him. This guy idk why but I hear has been the '3rd party' in quite a few relationships that I know of, so seeing him on the story usually is quite jarring. Like when I hear some story being told about some girl cheating on her bf, dunno why he is the guy in that story quite a few times. So personal notes aside this isn't something I will 'get over'. So I have decided since it's like this, I should unfollow my friend for a while until they go on to their respective postings and they won't see each other that often. But that's not my question, do you all think I should let her know why and maybe message her so she don't get the wrong idea or something? Other than this we're quite good friends.