Sorry guys, Kelly is back with her Billy

Actress and model Brook, 28, set tongues wagging after she was pictured with the 42-year-old Titanic star out in London yesterday.

Reports suggest Brook flew back from a girls' holiday in Cornwall to meet Zane after he begged her to give their four-year relationship another chance.

On Monday she wa s snapped flying out of Newquay, where she had spent the weekend having surfing lessons from British aces Alan Stokes and Mitch Corbett during the day and going clubbing with friends at night.

Before she left she reportedly told a friend that Zane "is the one".

Zane, who flew in from South Africa where he is filming, was spotted out on his bike in Notting Hill buying chocolates and flowers, although he tried to keep a low profile in a scruffy shirt, flat cap and sunglasses.

He met Brook for dinner at a Thai restaurant, where onlookers said they appeared happy to be together. One said: "Kelly was very giggly and looked very happy. She kept touching his arm."

They spent the night at a west London hotel before driving to their £1m farmhouse in Kent, later heading back to the capital.

But there was still no sign of Brook's £35,000 engagement ring.

The couple postponed their wedding last year because of the death of Brook's father and work commitments.