I mean, it comes down to jealousy, right? And that’s an emotion… You can’t really control your emotions
I think it’s more a matter of “is this a deal breaker”. Some people just might avoid those movies, some people might need to see it and get reassurance, some people can’t handle it at all. And some people just aren’t bothered - there’s people who are fine with their partner dating other people so long as they come home at the end of the night