Watch Gossip Girl Season 4 Episode 1 - Belles de Jour Online: Living out a real-life fairytale in Paris, Blair is pursued by a handsome young man, Louis (guest star Hugo Becker), who she suspects is a member of Monaco's royal family. A very concerned Lily asks Serena to help her find Chuck, who hasn't been heard from or seen in months. Meanwhile, a newly single Serena has been enjoying a Parisian summer of love with boys, Blair and Balenciaga as she tries to avoid the inevitable decision about which of her two long-time beaus, Dan or Nate, she should return to.