I really mean this nicely and know sometimes how we read text in an e-mail can be interrupted differently, so please know I am saying it nicely:
You have your picture and your families posted on this site and say you are from Chicago and now giving us information about your old BF and FB. Do you think that is fair to your kids and your dh. Maybe I know you or maybe I know your husband? Should I say something?
Would you like your dh to be posting this and have you and your kids pictures so all can see when talking about something like this? I wouldn't.
Would you print out your post and show it to your husband? If not, why?
What good can come out of this if you keep it up and end up talking and meeting.
I've been married for 20 years, this September, and I can tell you the last thing on my mind is finding an old boyfriend that may lead to something.

If you feel the need, maybe you should be talking to your husband since something may be missing.
Please let us know how it works out (or hopefully doesn't).