Discovering Your Inbox
The most crucial mistake I have seen men make is that they leave their Facebook logged in, which basically opens the floodgates to go through all of your archives. It’s like leaving your past on a showcase for her to investigate through.
Always always always log out of your Facebook. If you don’t, you never know what she may find in your messages. You definitely have some messages that you might have forgotten about that will trigger a mood swing from her. This can be very dangerous.