Adam Goldstein and Nicole Richie pose for a photograph during Maxim magazines Superbowl party on Feb. 5, 2005 in Jacksonville, Flal. The pair have called it quits for the second time in five months. 'We are confirming that we have amicably separated,' the couple said in a statement released Monday, May 22, 2006, by Richie's publicist, Cindy Guagenti. (AP Photo/Chris Polk)

LOS ANGELES - After an on-off-on-again relationship, "Simple Life" star Nicole Richie and her ex-fiance Adam Goldstein have officially split.

"We are confirming that we have amicably separated," the pair said in a statement released Monday by Richie's publicist, Cindy Guagenti. They did not provide any details of the break-up.

Richie, 24, and Goldstein, a professional club DJ who goes by the name DJ AM, called off their engagement in December.

The two were spotted together again a few months later, and Richie confirmed their couple status in an interview for the June issue of Vanity Fair.