Advertising Remove ads Home / Films / How do you know? / Photos / ¿Cómo sabes si...? Photos How do you know? Directed by James L. Brooks · starring Reese Witherspoon, Paul Rudd and Owen Wilson Photo 19 of 2723 January 2011 The film’s page Rate it Overview Cast 21 Where to watch Photos 28 Soundtrack 5 ¿Cómo sabes si...? Photo 19 of 27 Back to the photo All 27 photos Advertising Remove ads