Bamboozled by Louis, who marries Blair and then tells her it's only a marriage of convenience, Blair takes off during the reception. Who's driving her getaway car? Dan, of course. When they hole up in a hotel room afterward and Blair freaks out about what happened, she tosses an insult to Dan, and Dan finally calls her out for treating him so poorly. Later on, she acknowledges how great Dan has been to her and apologizes.