 The scene with Sebastian and Annette in the car was partially  unscripted. During takes, with the camera still rolling, Reese  Witherspoon (Annette) began making faces at Ryan Phillippe  (Sebastian). He tells her, "Stop, its distracting," and she  replies, "Are you laughing? Its okay. I wont tell anyone." The  director loved the chemistry in the scene and after realizing the  conversation fit into the movie, he decided to keep it.