It's a tale as old as time: Girl meets boy after buying one of his company's electric sports cars, billionaire boy starts flying from Palo Alto to LA to visit movie star girl... Surely it's happened to all of us at least once. In this case, Cameron Diaz and Tesla Motors CEO Elon Musk are the duo in question. Sources tell the New York Post the two are "close" and Musk visits Diaz "regularly." The paper, amusingly, refers to Diaz as a "big fan" of Musk, who also founded PayPal and Space X. She's been single since breaking things off with Alex Rodriguez in 2011.