It's unclear how Robert fit into the mix, but no doubt there was a fan frenzy surrounding the foursome. You've got your Selena fans, Beliebers, Twihards and Katycats, so the love was (over)flowing.
Sel, Justin, Katy and RPatz are seen in this video in Hollywood together--they met up at L.A.'s Chateau Marmont, then got into Justin's Mercedes minivan and hopped over to David Arquette's club, Bootsy Bellows.
Yes, we know Justin and Selena are underage, but they got into the club opening just fine--go figure.
Robert's love, Kristen Stewart, was nowhere to be seen, unfortunately, since she's in Paris.
A source spills that "Justin and Selena were cute together," telling Us Weekly, "Katy didn't want the night to end."