They're Holding Hands Already?!?

Archive pic

So, we've seen Miley and her new "buddy," Justin Gaston, together at the Cheesecake Factory and Church...

(In fact, we've seen a LOT more of Justin - check out his underwear modeling pix HERE and in our gallery below!)

...and now E! Online reports that the two had a follow-up date at the Century City mall on Monday. And get this, a source says they were "holding hands the whole time."

OMG, what? He's too old for you, Miley!