The couple rekindled their romance on Sunday evening during a secret rendezvous at a multimillion dollar Miami mansion, and on Monday night, they went public for the first time since their split eight months ago, joining fellow stars Jennifer Aniston and Eric Dane for a dinner on the terrace restaurant at the Mandarin Oriental hotel on Biscayne Bay PageSix.com can reveal.

Owen and Kate arrived separately and joined Jennifer and Grey’s Anatomy’s Dr. McSteamy, who had earlier been seen laughing and joking while having a drink at a table that had been reserved for them in the hotel bar. Owen, Jen and Eric have all signed up to star in the movie Marley & Me, which is about to start filming in Miami.

Owen and Kate didn’t sit together, but it was obvious to everyone that she was only there because of him,” said one observer. They sat at a table with Jen and Eric and four other people and they were all overheard talking about the new movie. There was lots of laughter and everyone was in good spirits. “Kate looked amazing and Owen couldn’t keep his eyes off her all night.”

Former Friends star Jen, looking stunning in figure-hugging jeans and a black chiffon top, had flown in earlier that day on a private jet from Los Angeles.

Owen, 39, and Kate, 28 (above in May) arrived in Florida on Saturday, booking into beachfront hotels a block away from each other in trendy South Beach. They were both spotted partying separately on Saturday night. Kate — in town to promote her directorial debut, the short film Cutlass, at the Miami International Film Festival — joined Demi Moore and Marisa Tomei for a girls’ night out, while Owen had dinner and drinks with a male friend at Nobu restaurant. It is thought Kate may have met up with Owen before the end of the night, although it was away from prying eyes on South Beach’s party circuit.

But on Sunday they were finally found out. After going for a jog on the beach, Owen was seen leaving the Shore Club at around 5 p.m., wearing shorts, a T-shirt and a red cap. He was charming as ever with hotel staff, handing one of the awed employees his towel as a gift. He then jumped into a red Prius with a friend, but when they noticed they had been spotted, repeatedly attempted to lose anyone who may have been following. Despite a number of sudden turns and U-turns, he was tracked down to a 10-bedroom, 10-bathroom, $9 million mansion in Miami Beach’s luxurious Star Island.

Soon afterward, at around 7 p.m., Kate herself showed up at the 40,000-square-foot property. Her chauffer had driven around the block of her hotel, the Raleigh, several times in attempts to confuse photographers before setting off. But the silver Infinity SUV was followed to the stunning home, where Kate and three young children were seen getting out and going inside.

The mother of one had earlier in the day taken son Ryder, 4, and two other children of similar age to the beach, before leaving them under the care of a nanny when she went to the premiere of her film.

During the afternoon, Kate had been put out by staff at the $800-a-night Raleigh, who asked her to move from some sun loungers because they were “reserved” for other guests. The Oscar-nominated actress went into a huff and grabbed another worker to query it. But any sulk soon wore off as Kate threw caution to the wind with a breezy bike ride along the beach and busy Collins Avenue. She giggled with her girlfriend as they tried to avoid photographers. Kate also squashed rumors of a pregnancy during her stay, showing off an impressive flat stomach in a tiny red bikini while poolside.

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