Reese Witherspoon, 33, and Jake Gyllenhaal, 28, costarred in the 2007 movie Rendition, after which rumors started flying about them as an off-screen couple.Reese Witherspoon and Jake Gyllenhaal have split, a source close to the actress tells PEOPLE. Witherspoon, 33, and Gyllenhaal, 28, costarred in the 2007 movie Rendition, after which rumors started flying about them as an off-screen couple.