Justin’s back on with a Las Vegas waitress he reportedly hooked up with last summer. How does TMZ know? The site claims Jordan Ozuna took a photo right from Justin’s house. And she’s in bed, looking all flushed and tousled. “We won’t say how we know, but we know,” TMZ provides as way of explanation as to how it’s clear Jordan’s shacking up in Bieberville and not back in Vegas.