Facebook stalks you trough Whatsapp. A month a go I meet someone new that just moved to my street and he was having some pc issues so I offered him my help and got his phone number to contact him through whatsapp, then a few days later in browsing my Facebook and I find him as a friend suggestion with no friends in common. I only sent him one message, we have no common friends and he just moved to my street, the only thing connecting us was a single message sent tru whatsapp.