Paris Hilton Trades in BFF at Sundance Fim Festival

Might the public make-out session with 43-year old Chris DeWolfe not have been Paris Hilton's most controversial decision at this year's Sundance Film Festival?

As you ponder what the heck Paris was doing at an event that celebrates quality movies, sources tell Page Six that the useless socialite did not stay with sister Nicky Hilton and her boyfriend Jeffrey Katzenberg at the event. The reason?

They hate Paris' pretend BFF, Brittany Flickinger. Consequently, Paris and Britt rented a condo with none other than upcoming Playboy model Aubrey O'Day.

Paris Hilton and Aubrey O'Day as good friends? Yup. This seems about right.

From there, Hilton reportedly played a game of best friend roulette.

"Paris kept ditching Brittany for Aubrey," said The NewY ork Post's source.

Friday night, O'Day and Hilton left Flickinger at the Eldridge and went across the street to Tao, where the former Best Friend Forever found them at 2 a.m. and, as a witness describes it, "was crying and screaming, 'Paris, stop leaving me!'"

There's something no male companion of Hilton has ever uttered.