Kate Winslet and Leonardo DiCaprio in Titantic (Twentieth Century Fox)It was one of the most climatic/cheesy moments of movie history.

Kate Winslet and Leonardo DiCaprio's untimely lust - destined for a watery grave.

But could that heady air of a frantic Kate-Leo romance ever really be recreated?

The stars are giving it their best shot on the set of new movie Revolutionary Road.

The film sees Kate 'n' Leo reunited as lovers for the first time since Titantic, with Kate's hubby Sam Mendes directing the flick.

And though he's still as fresh-faced as ever, Kate admits that returning to the raunch for sex scenes opposite Leo was "weird".

"Leo was like, 'Oh, get over it,'" Kate told Entertainment Weekly.Leo and Kate in Revolutionary Road

"I'm going, 'Yeah, a little reminder: You're my best friend. He (director) Sam is my husband. This is a bit weird.'"

"I hadn't realised how much my chemistry with him since Titanic would still stick," she continued.

"It's great to discover we can just slip right into it, like muscle memory."

"We knew that if we were going to do something again, it had to be something big and emotional," she added.

Ahh. It's enough to get us watery-eyed all over again. All we need now is a slightly dodgy ship and a couple of icebergs and we'd be sorted.

Sadly, though, we don't think either will feature for in a film titled Revolutionary Road. At least Leo 'n' Kate are back though. Whoopie.