Hey, the paparazzi had to ask, right?
"You guys are stupid," he said, smiling, as he signed autographs for fans at LAX after flying home from Miami, an exchange caught on video by X17online.
So he's not dating Miley, then?
"No, I'm happily single," the 28-year-old Twilight heartthrob replied. "I am very focused on work."
So, chalk the Kellen-Cyrus sighting up to just a couple of celebs enjoying the same mode of first-class travel.
A source told E! News yesterday that the two were "definitely not a couple." In between gigs, Miley had spent the weekend in the Bahamas with pal Cheyne Thomas (because jetting off to an island for a few days because they can is something else that celebs are wont to do).
And like Lutz, who's up next on the big screen playing the title role in Hercules: The Legend Begins, Cyrus is way focused on her work.
She's been all over the country performing at various Jingle Balls, and she tweeted yesterday that the video for "Adore You," the next single off of Bangerz, is coming soon.