Currently, Facebook does not notify you when someone unfriends you on the social network. That may soon change with the upcoming facebook timeline feature which will be replacing your current Facebook profile.
Unless Facebook changes this, you can actually see who has unfriended you during any point in time you’ve been on the social network.
- Get the new Facebook Timeline feature. There
- Choose a prior year on your Facebook Timeline and click on the number of friends you connected with that year in the Friends box.
- Click on the “Made x New Friends” list – anyone with an Add Friend link next to their name either unfriended you, or you unfriended them.