In honor of Valentines Day, Facebook let us in on something creepy. With the mountains of data it has on its members, Facebook has a pretty good idea if a romantic relationship between two people on the social network will last. It turns out that if two people have been Facebook official for three or more months, theyre likely in it for the long haul. In a new study, Facebook data scientist Bogdan State analyzes the relationship statuses of U.S. Facebook users from 2008 to 2011.