Kate Middleton is married to Prince William.Samir Hussein/Getty ImagesSome of the world's most famous married couples broke up and got back together before exchanging vows. Many of the couples point to their splits as pivotal moments in their relationships.Keep reading to see which well-known couples took time apart before walking down the aisle. While some celebrity couples may seem like they have fairytale romances, many have gone through rough patches to get where they are today. And though some of the stars have said that breaking up with their now-spouse was a mistake, others point to the time apart as a useful, healthy step toward marriage. We've rounded up the celebrity couples that broke up and got back together on the path to their wedding day. Kristin Salaky contributed reporting to an earlier version of this post.