But time passes. Feelings cool down. Maybe you miss their funny memes, or perhaps you just want to bury the hatchet.
If you unblock someone, be prepared to either send a friend request (awkward but necessary) or simply exist as "people who can see each other’s public posts." unblock someone on facebook
A: You have to do it one by one. There is no "bulk unblock" button. But time passes
and tap the Menu (three lines or your profile icon) usually located in the bottom right or top right corner. unblock someone on facebook