Cameron Diaz and Benji Madden have been sneaking around Los Angeles together lately, but now they've been caught! The unofficial couple carved out some alone time, and spent it on a date at Casa Vega in Sherman Oaks. And while this wasn’t their first official public appearance together, it was for a party to celebrate Nicole Richie’s new show Candidly Nicole! Unfortunately, Joel Madden wasn’t there to bond with his potential future sister-in-law, but there’s lots of time for that!