Could AUDRINA PATRIDGE be the STUPIDEST PERSON ALIVE? If you really thought Lauren and JB hooked, would you really hang with him? AUDRINA would!!

Could Audrina Patridge and Justin Bobby be moving back into the "more than just friends" category? The exes were hanging out at West Hollywood's Crown Bar, where they "were totally inseparable all night," an onlooker tells us. The pair came and left together, but spent their time "giggling, laughing and playfully holding hands." Meanwhile, Audrina's Hills pals (and former roommates) Lauren Conrad and Lauren "Lo" Bosworth partied with Brody Jenner and Frankie Delgado. And if there was tension, it wasn't showing. "There wasn't a whole lot of weirdness," says a source, explaining, Audrina "didn't seem to care what everyone else was up to." Also there: Lindsay Lohan, acting very kissy with Samantha Ronson.