During the movie, there are two parts when handwritten notes are shown. The first is when the Mark Walberg character leaves a note in Reese Witherspoon's character's locker saying how sorry he is for beating up her friend. The next note is when Reese leaves a note pinned to her dad's bedroom door saying she has broken up with Mark. If you pay close attention, you will note that the handwriting on both notes is obviously by the same person. They must have had the same 'crew member' write both notes.