Wh cant i send messages to non friends on fb?

[Lukaivan Zanze]

Ok so i know of all those security stuff you can do on fb but i found 2 old friends i want to message and for one im not sure if he is the real friend of mine,so i want to send a message to ask him,not add him first,the second friend i cant add at all,dafuq is this,and they tell me i can send a message to him but whenever i try,his name shows up at the message box and when i click reply it says the name is wrong...DAFUQ IZ ZIS

[Augustus]

Because your friend rqst is blocked

[Bex]

cos they made their settings that only friends of friends can message them