It's no surprise that Facebook knows a lot about us. With more than 3.2 billion likes and comments posting by Facebook users each day, we're speaking volumes about ourselves on a daily basis. Recent statistics reveal that Facebook knows a lot about your love life -- maybe more than you think. Author David Kilpatrick's book The Facebook Effect suggests Mark Zuckerberg could predict who you will be in a relationship with in one week -- and get it right about one-third of the time! Take a look at what else Facebook can tell about love lives across the globe.