I have several exes on my Facebook, but they are the ones that have stayed friends and are on good terms. One did flip out and defriend me when I didn't reply to him immediately, but he still tries to email me. The idea of keeping in touch is to respect boundaries and the friendship that you had and with some, it was more a case of bad timing rather than anything else. Some may keep tabs on an ex or want to get back together and that's not healthy. Does anyone else keep in touch with an ex and do you tell anyone else that you do?