Using Facebook FGraph API or FQL, can I know if userA has unfriended userB if I have all userA permissions?
In fact, here’s what I’d like to achieve:
There are two users for whom I have all permissions. They are friends together (I can see it using the API).
One day, I see that they are not friends together anymore and I’d like to know which one of the two has unfriended the other one. Is it possible, in a way or another?
I’m pretty sure the best you can do is detect that they’re no longer friends because they’re not listed in each other’s friends list.
However, Facebook makes a point of banning any application that lets people know when someone unfriends them.