I never add the women I meet to my personal FB account. I usually say that I don't use FB and is considered as an anomaly.
Also the settings I had is only friends of friends can search me so with no mutual mutual friends they cannot search for my account.
So here was one girl that I usually just talk through Viber and she said out of the blue that she saw my FB account as a suggested friend and wanted to confirm if it was me. I told her nope it's not and I checked and saw that there was a notification of a friend request from her and from that moment she also popped in as a suggested friend for my account.
Whew dodge the bullet on that one.