Kate Winslet has opened up about her relationship with former on-screen love Leonardo DiCaprio – revealing they traded ‘sex tips’ on the set of Titanic.

From Jack and Rose’s Titanic snog to Spider-Man’s kiss that defied gravity, here are the top movie kisses of all time.

Kate Winslet opened up about her unique relationship with Titanic co-star Leonardo DiCaprio in a new interview.

The 45-year-old actress told Rolling Stone that she and DiCaprio, 46, shared sex tips with each other while they were filming the 1997 drama.

And she even went on to describe their steamy romance scene in the Renault touring car as “nice”.

Leonardo DiCaprio and Kate Winslet have been close pals since starring in the iconic film together. Picture: Getty Images
According to the news outlet, Winslet and DiCaprio would laugh at gossip columns that suggested they were a couple.

“Just the notion of that was insane – it would have been absolutely like incest,” Winslet reportedly told Rolling Stone.

“I have the relationship with Leo that all the women in the world would envy.”

However, unlike most family members, the two actors allegedly discussed intimate details about lovemaking in DiCaprio’s trailer when they had downtime.

The pair dodged dating rumours following Titanic, but insist things have always been strictly platonic. Picture: AP Photo
As for what was specifically shared during those moments, Winslet kept her response vague.

“You know, some very, very personal things, asking each other for advice,” she told the outlet.

“Not necessarily comparing notes but sort of, ‘No, don’t do it like that, do it like this.’ He’s very good at that. I have to say, a lot of those sexual tips he’s given me have worked. And I know it’s vice versa.”

Winslet declined to comment when she was asked if she could offer some tips that were helpful for her.

All she did say, though, was that their exchanged tips were “too despicable” and “really graphic”.

Jack (Leonardo DiCaprio) and Rose (Kate Winslet) in freezing waters in one of Titanic’s final scenes. Picture: Supplied
Later on in the interview, Winslet described the Titanic sex scene between the characters Jack and Rose was so unlike DiCaprio and herself, but she still found the experience enjoyable.

“Doing that scene, it so wasn’t us. And yet we were so locked into what all that had to be about. The Rose in me was really sort of loving the Jack in him, actually,” Winslet said.

“And even though I didn’t feel that way about Leo, it was quite nice to sort of feel that way in the scene. It was quite lovely.”

Kate Winslet described her Titanic sex scene with DiCaprio as ‘quite nice’. Picture: Getty Images
DiCaprio reportedly got up right away and walked off once the camera stopped rolling, according to Winslet.

“And I remember lying there thinking, ‘What a shame that’s over.’ Because it was quite nice,” she said.

It has been 23 years since the Academy Award-winning film made its silver screen debut.

Titanic will be reaching its 24th anniversary on December 19, 2021.

The movie made more than $US2.1 billion worldwide from its original release, according to ticket sale data on Box Office Mojo by IMDbPro.

This number does not reflect Titanic’s 3D release in 2012 and two re-releases in 2017 and 2020.

This article originally appeared on Fox News and is reproduced here with permission