Do people know if you unfollow them?

No, if someone unfollows you, you do not receive a notification about it. However, you can see if someone unfollowed you (that previously followed you) if they no longer show up in your followers list.May 29, 2016 read more

Abosolutely no, when people unfollow you, you will not get message about that. But you can check if a person unfollowed you - if they no longer in your followers list, means he unfollowed you. read more

If later you decide to Follow that friend again, no notification is sent and no story is generated. furthermore - When you select to Follow a non-friend, there is a notification sent to the non-friend that you started Following them and a story is generated in the News Feed. read more