During the movie, the names of Chris Evans' and Michelle Monaghan's characters are never revealed. Evans' character refers to himself as "Me", and Monaghan's character is "Her".
At the end of the movie, Me (Chris Evans) is seen tap dancing. His mother owned a dance studio and taught Evans to tap. He has admitted in interviews that he does it when he is nervous.
Jaeden Martell and Chris Evans who played the same character Me at difference ages would later play cousins in Knives Out (2019) and Father and Son in Defending Jacob.
Chris Evans shares the screen with Anthony Mackie for the eighth time. Previously they appeared together in What's Your Number (2011), Captain America: The Winter Soldier (2014), Playing It Cool (2014), Avengers: Age of Ultron (2015), and Captain America: Civil War (2016), Avengers: Infinity War (2018), Avengers: Endgame (2019).
Topher Grace and Luke Wilson appeared on That '70s Show (1998).