Ryan Reynolds, Stuart Townsend, and Emily Mortimer will star in "Chaos Theory," says The Hollywood Reporter. The comedy is coming from "Pretty Persuasion" director Marcos Siega and "Breakin' All the Rules" scribe Daniel Taplitz.

"Stuart Townsend has joined the cast of the romantic comedy "Chaos Theory" for Warner Independent Pictures and Castle Rock Entertainment. Ryan Reynolds and Emily Mortimer already have boarded the Marcos Siega-helmed film... Penned by Daniel Taplitz, 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. Townsend completes the love triangle playing Buddy, the best friend of Reynolds' character who also falls in love with Mortimer's character."