When You Unfriend On Facebook Does The Person Know
Unfriending
When an additional user unfriends you, you no longer appear on her friend list. If she has actually elected to hide her profile content from non-friends, you could be not able to see parts of her account that you previously had accessibility to. Even if you can still see her account Wall, you will certainly no longer be permitted to upload anything to it as soon as you are no more her friend on the website. The reverse is also true-- somebody that unfriends you might no longer publish new content to your Wall surface.
Notifications
Alerts are a method for Facebook to connect with a user when there is new activity related to her account. While you are informed of just about every new activity a close friend takes regarding your account-- such as sending you a message or publishing on your Wall surface-- unfriending is just one of the few exceptions. You will not get an alert, either on your Facebook Wall surface or via e-mail, when someone unfriends you.
Reciprocity
When among your Facebook friends unfriends you, she vanishes from your friend list just as you vanish from hers. Because of this reciprocity, you can search your friend list for friends that you suspect may have unfriended you. If a person no longer appears on your friend list but you see that her profile still exists, she has unfriended you.
Factors to consider
Even if a person vanishes from your friend list does not indicate she has actually unfriended you. It is possible that the customer has deactivated her account, or that it was disabled by Facebook for one reason or another. If you were unfriended and wish to reconnect with the user, you could still send her a personal message or request her friendship once again utilizing the appropriate switches on her profile web page.