On FB if I someone blocked can I unblock without them knowing?

[Summer Rain]

Sorry, its meant to read 'If I block someone then unblock them, will they know or does it automatically send a friend request?

[Harry]

If you blocked someone, you will no longer be friends and s/he won't be able to find you. But you can go to your 'Blocked Users' list and unblock them. Then you can friend request them again.

[Denise]

Your question dont make alot of sense. If they blocked you then no you cant unblock. But if you are the one who blocked them then yes you can unblock them. They wont know

[purringtray691]

If you comment on a mutual friends status,
they'll see your comment if they're unblocked.

**edit** It doesn't send a friend request and they aren't alerted that they have been unblocked.

If you want to be fb friends with them again, YOU have to send it.

[Angeleyes]

No, they won't know that you unblocked them and no it doesn't automatically send a friend request, just unblock them and they're on your list again.