Someone from my past found me on Facebook. While I haven't heard from him beyond the initial friend request, he did inspire me to look for someone else from my past. I found an old friend (an ex boy-friend, really) and contacted him. We are having a delightful time, getting to know each other again. At least I am -- I can't really speak for him. Our four-day-old exchange has none of the awkwardness I was concerned about. We're just chatting away. My husband knows, and fully supports this reconnection.
Life is good!
Edited to add: The first old friend and I have started exchanging email. He's as charming as I remember him being. Note to self -- Taking risks is good!