Jennifer Aniston thinks "laziness" makes relationship fail. The 40-year-old star - who is divorced from Brad Pitt and has endured splits from actor Vince Vaughn, model Paul Sculfor and singer John Mayer - insists romances only work if both people strive to make each other happy.

She said: "Why does the romance leave relationships? I think it's laziness. I really do. I think a good relationship is about collaboration. That's the way to go in a relationship."

Nicole Richie, Lindsay Lohan and John Mayer were among mourners at a memorial service for DJ AM Thursday. The stars - along with Lindsay's girlfriend Samantha Ronson, socialite Nicky Hilton and actor Eric Dane - gathered with family and fans at the Hollywood Palladium to pay their respects to the musician, real name Adam Goldstein, following his death last week.

An onlooker said: "The crowd was very hip and eclectic, there were people dressed in smart black suits and people dressed in jeans and T-shirts. It was packed though, you could tell how well loved he was.

Jennifer Aniston still wears the gold Rolex watch given to her by an ex-boyfriend. The Hollywood beauty has been spotted sporting the luxury timepiece amid rumors she and singer John Mayer have rekindled their romance and are meeting up for secret romantic trysts.

A source said: "John gave Jennifer the Rolex when they were at the height of their romance in May 2008. Jennifer hardly took the watch off, but when they split she stopped wearing it. In recent weeks she's started wearing it again to show John he's still in her thoughts."

Patrick Stump is worried about his mother's reaction to his arrest. The Fall Out Boy singer was arrested in Beverly Hills last week on a two-year-old warrant for driving without a valid license, and though the star admits the offense, he insists it was accidental.

He said in a statement: "All I really have to say is ignorance of the law isn't innocence. I didn't want to give up my Illinois driver's license and was unaware that was a crime. It is, by the way, in the state of California. Lesson learned. I technically broke a law, so technically I deserve whatever I get.

Jennifer Aniston will only date celebrities. The 40-year-old actress - who is divorced from actor Brad Pitt and split from musician John Mayer earlier this year - prefers to have relationships with people who are already in the spotlight as she knows they will empathize with her hectic lifestyle.

A source told Us Weekly magazine: "Jennifer won't date a normal guy. She goes after the hottest thing of the moment."

Cameron Diaz is reportedly dating Jason Lewis. The "My Sister's Keeper" actress attracted attention with her flirty and affectionate behavior towards the "Sex and the City" actor during a recent meal together at a sushi restaurant in Venice Beach.

An onlooker said: "Cameron and Justin were sitting in the corner of Shima totally wrapped up in one another. They couldn't stop touching each other. And we couldn't stop looking."