This movie marks the second time Jennifer Morrison and Patrick Fugit appear in a film or TV project together. In 2006, they appeared together in House (2004) (Whac-A-Mole (2006)).
During the teeth whitening scene, Lily (Karen Gillan) suggests the color nebulous white. Gillan's character's name in Guardians of the Galaxy (2014) is Nebula.
The shoes Katherine (Jennifer Morrison) is wearing in the park are not Louis Vuitton like she says, but rather Christian Louboutin notoriously known for their red soles.