Have you read Getting Past Your Past?
Your post reminded me of the website's blog entry today about Facebook.
To quote Susan J. Elliott..."STOP IT STOP IT STOP IT."
Give it a read here
http://gettingpastyourpast.wordpress.com
(sorry the link option is not working we'll have to go old school and cut and paste.)
I am inclined to agree with Ms. E. about looking for exes on Facebook.....STOP IT STOP IT STOP IT. And before I'm told to practice what I'm preaching, I was guilty of checking out XABF's page a couple of times. So I have work to do, too!
Good luck!
Alice