I am very close friends with a married couple, “Sam” and “Rebecca.” Recently, Sam confided in me that he is using a dating app that rhymes with Hinder to meet up with other women on a regular basis. He says it doesn’t “mean anything,” and that he isn’t going to stop. What do I do? Should I tell Rebecca? Should I try to talk Sam out of doing what he’s doing? I am totally shocked and can’t stop thinking about it. Help!