Never Let Go! 11 Leo DiCaprio and Kate Winslet Photos Then & Now

The actress is completely aware she "lied" to Jack when she swore to never let go.

Kate Winslet and Stephen Colbert fixed the ending to "Titanic" Thursday night with an impromptu recreation of the famous scene where she lets go of Leonardo DiCaprio's Jack, despite promising, "I'll never let you go."

"I lied. I know," the "Late Show" guest said. "I agree, I lied, I fully lied. I hold my hand up, I let him go. Plus, he just should have tried harder to get on that door."

The pair sprung from their seats and took their respective positions in the scene, with Winslet using Colbert's desk as the door she was floating on in the 1997 blockbuster.

"Promise me, Rose. You'll let me get on that door with you," Colbert said.

"Come on darling, there's room for two," Winslet said and helped him climb up.

While Winslet admitted she could have saved her fictional lover in the scene, she could not have stopped herself from shivering while filming it.

"Yeah, I was really f-cking cold," she exclaimed in a "lightning round" of questions written by massive "Titanic" fans on Colbert's staff.

Another revelation: That hot sex scene in that car was unscripted, and also not as hot as it appeared. "It did get quite sweaty in the car, but we were spritzed down with spray Evian bottles to make us look really like we were in the throes of..."

But the exclusive "Titanic" fun fact she revealed was who she auditioned with: Matthew McConaughey.

"Isn't that weird? Never said that in public before!" she said.

Well alright, alright, alright.

View Photos Never Let Go! 11 Leo DiCaprio and Kate Winslet Photos Then & Now