My friend's cousin's friend's friend is having an affair and his wife has no idea. My husband and I do not know these people and neither do my friend or her cousin. My friend's cousin told her and she just mentioned it in passing to my friend. it was  “ oh, yeah apparently this guy is cheating on his wife” 

Again, we have no idea who these people are and wouldn't even know where to find them. My husband told me that it's best if we mind  our own business and I agree. I don't even know my friend's cousin, let alone her cousin's friend's friend.