Justin Jacob Long (born June 2, 1978) is an American actor, comedian, director and screenwriter. He is known for his film roles in Galaxy Quest, Jeepers Creepers, Dodgeball, Accepted, Live Free or Die Hard, He's Just Not That into You, Drag Me to Hell, and Youth in Revolt. He voiced Alvin Seville in the live-action Alvin and the Chipmunks film series. He is also known for his personification of a Mac in Apple's "Get a Mac" advertising campaign (2006β2009), and appeared as himself inΒ Intel's "Go PC" campaign. During an episode of theΒ podcastΒ Armchair ExpertΒ withΒ Dax Shepard, Long revealed that he was the victim of a drugging andΒ abductionΒ during the filming ofΒ Youth In RevoltΒ while inΒ Michigan. He had a relationship withΒ Drew Barrymore that was on and off between 2007 and 2010.Β He also datedΒ Amanda SeyfriedΒ from 2013 to 2015. In January 2022, it was reported that he was dating actressΒ Kate Bosworth.Β In April 2023, the couple announced their engagement and they married in May 2023, less than two months after getting engaged.