Who is really Gossip Girl?

In the TV series "Gossip Girl," the identity of Gossip Girl is ultimately revealed to be Dan Humphrey, the lonely boy from Brooklyn who has always loved and written about Serena van der Woodsen. He creates the blog as a way to get closer to her and her world, and to take revenge on those who have wronged him. Dan's alter ego, Gossip Girl, becomes an integral part of the Upper East Side social scene, shaping the lives of its privileged inhabitants and constantly stirring up drama. This twist is revealed in the series finale.