Denise Richards, Richie Sambora Call it Quits

Some celebrity gossip you just never see coming.

Like Pamela Anderson and Kid Rock calling it quits.

Or Spencer Pratt coming up with some new PR scheme.

Similarly, Denise Richards and Richie Sambora have broken up, her rep says, and unlike in the case of her pal Pamela, it didn't take an appearance by Borat to kill the relationship.

Although they were no longer a couple at the time, last month they attended the funeral for Richie Sambora's father, who died of lung cancer on April 21 in his native New Jersey.

"Denise ended things but wanted to be there for him as a friend," a source close to Richards tells People.

A Sambora source calls the split "amicable."

"They did break up about a month prior to Richie's dad's death," says the source. "She came to the funeral to support him. He needs to focus on his daughter, Ava, and wishes Denise and her kids all the best."

Richards' mother has kidney cancer, and she told People in February she and the Bon Jovi guitarist were important in helping each other cope with their parents' illnesses.

Richards, 36, and Sambora, 47, began dating in April 2006 after splitting from their respective spouses.

Richards' four-year marriage to Charlie Sheen officially ended in November when she got pissed about his addictions to drugs and prostitutes.

Sambora and Heather Locklear finalized their own divorce in April. Since then, the former Melrose Place star has been linked to David Spade and Johnathan Schaech, whoever that is.