Couples Watch

03/12/2007 at 06:00 AM EDT

• Cameron Diaz, getting cozy with actor-singer Tyrese at the Xenii after-hours party (which changes locales every week) in Los Angeles. The pair engaged in a full-on PDA display at their reserved table, kissing and holding hands. Diaz, who split from Justin Timberlake months ago, was spotted canoodling with Djimon Hounsou a few weeks earlier – but her rep insisted that the two were "friends, nothing more."

• Gwen Stefani and Gavin Rossdale, sitting with their arms wrapped around each other as they dined on seafood soup and margherita pizza with Swiss tennis champ Roger Federer at West Hollywood eatery Madeo.

• Tori Spelling and husband Dean McDermott, browsing through the fruit and nut aisles at Whole Foods in Brentwood, Calif. The pregnant actress, who's due at the end of March, picked up red grapes while McDermott scooped up prepared food and packages of paper coffee cups.

• New couple Nick Cannon and Selita Ebanks, hanging out while the actor deejayed at the Victoria's Secret Pink Spring Break bash at the Raleigh Hotel in Miami's South Beach. "They’re really cute together – she stayed up by the deejay booth the whole time," says a source about the Victoria's Secret model. "It was really sweet and cute." And Cannon told us that the two bonded over their charity work – Ebanks works with the mentoring program Stardom Youth Foundation and he has his own nonprofit focused on helping underprivileged children. "I think that’s one of the ways we connected," he said. "To me that was one of the attractive things about her."

Sienna Miller and Jamie Burke

Dara Kushner / INF; Roger Wong / INF

• Adam Sandler and wife Jackie, enjoying a late-night dinner at the Lala's Argentine Grill in L.A. At one point during their meal – he feasted on a beef-and-rice dish and she had a combination platter – the comedian had her laughing so hard that she covered her nose to prevent the iced tea she was sipping from shooting out of her nose. And when a fan approached their table to tell Sandler that he was "brilliant," he graciously thanked her.

• Sienna Miller, checking out new man Jamie Burke's band Bloody Social at The Pitt, the downstairs VIP lounge at New York City club The Plumm. The actress – who wore a silver tunic, leggings and black round-toe heels – arrived with Burke and then hung out with friends in a corner banquette. When the show started at midnight, the actress pushed through the crowd and stood front-row center as she grooved and sang along during the performance. Before exiting the stage, Burke gave Miller a hug.

• By REAGAN ALEXANDER, ALEXIS CHIU, TIFFANY HOPKINS and DEBI SPRINGER