Thanks to you both! That helps. I think it's a particularly sticky situation because she was MY confident years back when I personally (and unfortunately) had an affair. My husband now knows everything, but at the time she was there for me and didn't tell a soul. So, in a way, even though I am uncomfortable, I feel like I owe her one.

But you're right, the bigger picture is that they are no longer married so it isn't her ex's business. And, really, it isn't my husband's either. And, if I were to tell him, he would be equally uncomfortable with the information.

Anyways, thanks so much for the advice and for sharing your story wants2fly!