Carey Hart's New Year's Entertainment: His Ex, Pink
01/01/2009 AT 11:00 AM EST
Rather than sharing a New Year's kiss at the Las Vegas club Hart owns, "he escorted her to the stage and toasted her at midnight," an onlooker said. "Then he wished everyone a happy new year. It was very informal."
As expected, Pink followed the toast with a live performance at Hard Rock Hotel's Wasted Space.
Before her 30-minute show on the club's stage, though, she and her ex hung out in the VIP area with other friends.
"They didn't really talk much, but at midnight Carey grabbed her and took her up to the stage and introduced her. He sort of led her to the stage."
Later, Pink went back to the VIP area and hung out with friends before leaving the club around 2 a.m.
Coast to Coast: Stars Ring in 2009