There's something about Cameron!

With rumors swirling that Cameron Diaz is engaged to beau Benji Madden, the 42-year-old starlet's former boyfriend Sean "Diddy" Combs must be feeling a little emotional, and during a recent night out, he was overheard gushing about his former lady love!

"He was at a dinner and the subject turned to Cameron dating Benji Madden," the source tells Us Weekly. "He said, 'If I could turn back time, things would be different!' He was bummed, saying, 'She's the sexiest girl in the world.'" Awww!

Diddy and Diaz were first linked in 2008, and despite an on again/off again romance, the two were spotted all over each other at a CAA party in 2012. "Her hair was all crazy, her makeup was smeared and they made out in front of everyone," an onlooker told the mag at the time. "She was acting like a teenager!"

Diaz, who has dated guys like Justin Timberlake and Jared Leto, started dating Madden in May after Nicole Richie set the pair up. Seems like that's going pretty well, so maybe Diddles should just get over it!