Facebook allows you to block people from your account if you have people that are troublesome.
When you block someone on Facebook, the person cannot see anything you do on Facebook or begin a conversation with you.
However, if you choose to unblock the person, he will then be able to see your posts on Facebook that you share with the public.
The person won’t automatically become your friend on Facebook. If you want to become friends with a person who you’ve unblocked, you’ll need to send them a friend request.
To unblock someone:
- Click in the top right of any Facebook page
- Click Privacy Shortcuts
- Click How do I stop someone from bothering me?
- Click View All Blocked Users.
- Click Unblock next to the name of the person you want to unblock.