So lets say "John Smith" blocked "John Doe" who is a friend of John Smith. John Smith later checked his block log and found out that he accidentally blocked John Doe. If he unblocks John Doe, is he friends with John Doe or does he have to resend a new request to John Doe?
I know that if an account was deactivated you don't have to readd.
Best Answer
Blocking a user automatically unfriends them as well.
If John Smith was to unblock John Doe, he would need to re-request a friend connection with John Doe.
From Facebook's help page for Blocking People (emphasis mine).