'He should have tried harder!' Kate Winslet says Titanic's Jack COULD have survived... and reveals Matthew McConaughey almost took iconic role

It's a scene that will go down in movie history - Jack selflessly giving up his life to save his lover Rose by pulling her onto a piece of wooden debris as the Titanic sinks beside them.

But 20 years later Kate Winslet, who played Rose, has admitted that perhaps the onscreen death of Leonardo DiCaprio's character didn't need to happen.

On Stephen Colbert's U.S. chatshow on Thursday night, he reminded her: 'In the famous line, you say "I'll never let you go, Jack,"'.

Laughing, Kate interjected: 'I lie. I know. I know. I agree. I lie. I fully lie. He should have tried harder to get on that door.'?

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'He should have tried harder!' Kate Winslet says Titanic's Jack COULD have survived in an appearance on?Stephen Colbert on Thursday night

'He should have tried harder!' Kate said Leo's character Jack didn't need to die

'He should have tried harder!' Kate said Leo's character Jack didn't need to die

While Kate and her co-star Leo had already found success in Hollywood, playing Jack and Rose in the multiple Oscar-winning film took their careers to the next level.

But, said Kate, Leo wasn't the only one considered for the role of the lovable 19-year-old Jack Dawson.

In a series of revelations about the much-loved 90s movie, Kate said: 'I auditioned with Matthew [McConaughey]—isn't that weird? Never said that in public before!'?

Reliving the moment: Colbert played Jack as the two recreated the moment the Titanic sank

But will she let go? Kate said her onscreen lover could have fitted on the wooden debris

One memorable scene from the movie showed Jack and Rose steaming up the windows of a car in the ship's hold.

But the iconic moment wasn't planned in advance, with Kate reflecting: 'I don't think it was scripted. I think we came up with it on the day.?

'It did get quite sweaty in the car, but we were spritzed down with spray Evian bottles to make us look really like in the throes.'

Steaming things up! Kate said the sweaty car scene came together organically on the day

Steaming things up! Kate said the sweaty car scene came together organically on the day

And the now 42-year-old said of the film's iconic ending: 'I did get hypothermia. I was really f***ing cold.'?

Luckily her suffering paid off when it came to awards time - with Kate nabbing the first of her four Best Actress nominations at the Oscars for her suffering.

Kate missed out on the gong, which went to Helen Hunt. She eventually won her Best Actress Oscar in 2008 for The Reader.

The goss: Kate said of the film's  ending: 'I did get hypothermia. I was really f***ing cold'

The goss: Kate said of the film's ending: 'I did get hypothermia. I was really f***ing cold'

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