Facebook Friend Requests

Don't you just love it when you get a friend request on Facebook. I have been not excepting friend requests. But I recieved one a few days ago. So I thought what the heck I accepted it. We talked on Facebook Messenger for about 5 minutes. I tried to send her a hello message it said unable to send. I just looked at my friends on Facebook. She was my only friend until now. She obviously I guess unfriended me so now I have no friends boo hoo. If you don't want to be my friend don't waste my time friend requesting me.