According to The Hollywood Reporter, Emily Mortimer is in negotiations to star opposite Ryan Reynolds in the romantic comedy Chaos Theory for Warner Independent Pictures and Castle Rock Entertainment. Helmer Marcos Siega (Pretty Persuasion) already has boarded the project, which is being produced by Frederic Golchan.

The story centers on a compulsive organizer (Reynolds) who decides to live his life without planning and in the process discovers love with Mortimer's character.

Daniel Taplitz (Breakin' All the Rules) penned the screenplay.