11. Brad Pitt and Angelina Jolie
Brad Pitt and Angelina Jolie were officially still with other people (Jennifer Anniston and Billy Bob Thornton, respectively) when the met on the set of Mr. and Mrs. Smith in 2005. Although rumors ran rampant that Pitt and Jolie hooked up on set, the pair denied it. The two married and had three biological children together in addition to their three adopted children. Although they finally married in 2014, they split less than two years later.