Additionally, due to trust being broken with 1st affair, then drug addiction, and now this latest affair where she left for another man and moved in with him, I don't think I could ever trust her again.

The fact that it was with a person at her work (found out 2 others during our seperation period as well) and one is one of her supervisors and she is unwilling to change jobs or even departments on top of the fact that she still has all 3 as "friends" on Facebook which I have told her those need to be removed and blocked (i did a few of the females I was talking to) and she still gets messages from them but deletes all messages b4 I can ask to see them.....am I wrong in thinking that she is keeping me as a backup.