Ryan Reynolds and Cailey Fleming chat with ET’s Rachel Smith about their film, ‘IF,’ in theaters now. Ryan credits his and director John Krasinski’s kids being best friends as the reason he landed his film role. Plus, Cailey and Ryan talk about their sweet bond during filming, including a sneak peek of their secret handshake! Ryan gives an update on ‘Deadpool Vs. Wolverine,’ saying it is ‘almost done’ with final edits, adding that working on the action-packed superhero film feels as if it ‘swallows your entire life whole.’