It was originally agreed upon that there would be eighteen friends in the overall story. Many of which included older siblings that were based off people the cast looked up to during their high school years. These characters were eventually removed to keep the story focused on the seven friends.
The story revolves around seven friends returning from their first year of college. This was also the case for all the actors playing the friends, a fact that Caleb thought would bring an extra sense of realism to the story.
During the montage at Jamie's house, there is a reference to Reel Stuff's previous project.
Before principal photography started, several promo scripts were written. Each was based around one of the friend couples. Due to time restraints only one was filmed, and none were released.
Swing sets play a powerful motif in the overall theme of the story. Every time they are seen, a relationship is either being made or broken.