Kristen was hosting a Maxim party for Assassin's Creed II at Voyeur but walked the red carpet without her funnyman.
Could it be because Dax has no game? "He doesn't play video games," Kristen told E! News. "He doesn't have the motor skills!"
Even inside the bash her beau kept his distance.
"They were on opposite ends of the room," a partyer says, noting Kristen's man also refused to take any photos with her. Some boyfriend!
Also rolling without his significant other at the soirée was Kourtney Kardashian's baby daddy...
None of the Kardashian girls were in sight, but Scott Disick attended the bash with their brother, Rob.
He was spotted talking to Lo Bosworth and seemed to be enjoying his night out.
In a total role reversal, Lauren Conrad stuck close to boyfriend Kyle Howard. Although they walked the carpet separately, they were glued together inside the event, except when L.C., a self-proclaimed Gleek, took a photo with TV crooner Cory Monteith.
Find out why Nicole Richie was MIA from her own party last night!