Blair Waldorf and Seth Cohen are dating. Wait, what?!? Yup, you read that correctly. Leighton Meester and Adam Brody are getting cute and cuddly together. The two met while filming The Oranges and have been dating ever since. Awwwww. While you’re busy planning an OC/Gossip Girl crossover wedding, we came up with some other celebs who would look oh so cute together as well.