Christina Applegate is baffled by rumours she is dating U.S. TV star Zachary Levi - because she has only ever met him once. Internet gossips linked the pair recently after they were spotted `getting intimate' at a Los Angeles nightclub last month (Jan08). But Applegate was quick to kill the story at the Producer's Guild Award in Beverly Hills, California on Saturday (02Feb08), telling reporters, "We don't even know each other. So that story was just a big rumour. I met him once for 10 minutes, so I don't even know where it came from."