| Hi, Carolyn: My husband and I work in the same place and are long-term friends with another colleague. The colleague was divorced most of that time but remarried a few years ago. His wife is nice but sometimes seems a little uncomfortable around us — which makes sense because she does not work where we do. Tonight, we had them over for dinner, and when he left the room to take a call from his 20-something son, the wife told us he is not the biological father of the son. It was a totally gratuitous revelation. It’s well known that the son had been conceived by IVF but not that our colleague wasn’t the biological father. Wife made clear that she knew we didn’t know and quickly changed the subject as soon as our colleague came back. I feel quite awful about it; our colleague obviously didn’t want us to know because he otherwise would have said something during our lengthy friendship. In fact, according to the wife, even the son wasn’t told till he was older. I think the right move is just to never say anything to anyone about it, but I somehow feel like we’re keeping a secret from our friend. And I feel the wife betrayed our friend and he doesn’t know that, either. At the same time, I think he’s quite committed to the marriage, so telling him would cause upset without any probable gain. Thoughts? — Colleague | 
