[revscat]

Had the same thing happen to me after a date. We met on a dating site, agreed to meet for drinks. I never even knew her last name. The date didn't go well, so we ended it early. Afterwards, she showed up on my recommended friends list, and I assume I on hers.

Creepy.

[zghst]

I think FB does matching with phone number, if they have your presumed phone number in your contacts, it will link you in the graph