This was asked me anonymously in a DM. The only other information is that they are “newly married”.
NO! Don’t be in the middle. There are many reasons why someone cheats. There are many issues that the person is working out individually and also as a couple. Why make the personal problems of a couple the personal problems of a “triple” (when you include yourself).
I have seen this several times. Where a friend is cheating. Even when I’ve seen people close to me being cheated on, for instance, I see the husband of a good friend out with another woman. I’m friends with the wife but not the husband so could’ve easily told the wife but I chose to stay out of it.
Why did I stay out of it?
Because sooner or later the wife finds out. And all shit hits the fan. Why be in the middle of shit spraying on your face. The couple will work it out sooner or later. One way or the other. For better or for worse. In sickness and in health.