Verb, preterite of "to friend."
Related to facebook
; the action of adding another student as a friend. You click a button, "requesting" that the other person will allow you to add them as a friend. They will receive your request and can either accept or deny it.
You can deny any friend request, and the other person will not be told you rejected them; however, you will not appear on their friend list. This will lead to their repeated attempts to "friend' you. In the end, it's easier just to confirm the darn request.
Despite the appearance and similar meaning, not a shortened form the word befriended