U.S. pop star Justin Timberlake and actress Jessica Biel have ended their three-year courtship,a mutual friend told Usmagazine.com. Justin Timberlake and Jessica Biel had been dating for the past three years before their split.The source said Timberlake broke up with Biel on the phone. "It was about a month ago," the friend reported, adding the actress is in "severe denial and won't accept" the relationship is over.While in New York in September to show his William Rast clothing line at Fashion Week, Timberlake was "clearly on the hunt," snitches a friend. The singer supposedly dirty-danced with a tall blond in a short black dress at a Manhattan club Sept. 9. The late-night incident is similar to another guys' night out in June when JT was allegedly spotted making out with a woman at N.Y.C. hot spot Avenue. Curious clubgoer Lindsay Lohan didn't hold back when she witnessed the alleged incident and snapped a nearly blacked-out photo, asking, ...