Dear Prudence,
My wife and I have been married a long time. I recently found out that there is a very good chance that she slept with her ex back when we were dating. My inclination was to let sleeping dogs lie, since that is long past, but I am good friends with her ex’s brother and we have close mutual friends who I think are aware of this fact. If true, this issue is in no way a deal-breaker for us; I believe it will clear the air if she confirms this and I will offer that I would like not to be the only one who does not know about this. My concern is, will bringing it up at this late date cause more harm than good? I believe I can let it go without mentioning, but it will not be easy to do so. Thank you in advance for your help.