Although The Hills just started filming the fifth season, feuds have already erupted! On February 27, while enjoying a night on the town at Hollywood hotspot My House, Audrina Patridge, 23, and Brody Jenner's Playboy Playmate girlfriend, Jayde Nicole, became embroiled in a heated fight. "They were filming for The Hills and Jayde was rolling her eyes and being rude to Audrina," an onlooker tells In Touch. "Jayde and her girlfriend finally approached Audrina and went crazy, yelling at her." It looks like Jayde, 23, wasn't very happy about Audrina's relationship with Brody. "Jayde has always been jealous of Audrina and thinks Brody has a thing for her," says an insider. "But Brody and Audrina are just friends." The night ended with Jayde leaving, but seeming to need assistance because she appeared a little too tipsy. Audrina insiders insist, "She thinks Brody is a good friend and that's it." Jayde and Brody, 25 have been dating for five months.