chunk: Evan travels back one final time to the day he first met Kayleigh as a child. He intentionally upsets her so that she and Tommy will choose to live with their mother, in a different neighborhood, instead of with their father when they divorce. As a result, they aren't subjected to a destructive upbringing, don't grow up with Evan, and go on to have happy, successful lives. Evan awakens in a college dorm room, where Lenny is his roommate. As a test, he asks where Kayleigh is, to which Lenny responds "Who's Kayleigh?" Knowing that everything is all right this time, Evan burns his journals and videos to avoid altering the timeline ever again.
  Eight years later in New York City, an adult Evan exits an office building and passes by Kayleigh on the street. Though a brief look of recognition passes over both of their faces, they both decide to keep walking.