According to the rumor mill, The Hills’ Lauren Conrad and Audrina Patridge have fallen out because Lauren hooked up with Audrina’s boyfriend, Justin Bobby, behind her back. If it’s true, this is beyond ironic considering the current storyline on the show is LC’s disappointment that pal Stephanie Pratt dated her former fling, Doug, behind her back. Not to mention the whole Jen Bunney/Brody Jenner fiasco of two seasons ago. But like I said, it’s still just a rumor. Although, we all know sometimes, rumors turn out to be true.