Justin Bieber just can't smooch Selena Gomez enough -- telling Ellen DeGeneres that his girlfriend has "very kissable cheeks."
In an interview airing today, Justin -- who was sporting a new faux-hawk -- admitted he enjoys being able to show a little PDA in front of the cameras.
"You know, I feel like I only live once," he says, "It sucks to always have to hide it. I just kind of do me, I guess."
Bieber was on the show to promote his new Christmas album, "Under the Mistletoe" ... which is probably where you'll find him and Selena through the holiday season.
