How ROBERT DOWNEY JR.'s Child Wrote One of AVENGERS: ENDGAME's Most Powerful Lines - SPOILERS

Robert Downey Jr. & Susan Downey
Robert Downey Jr. & Susan Downey at the AVENGERS: ENDGAME world premiere.
Credit: Featureflash Photo Agency /
Credit: Marvel Studios

Spoilers ahead for Avengers: Endgame.

One of the most resonant lines from Avengers: Endgame was when Morgan Stark (played by Lexi Rabe) told her father, Tony Stark (played by Robert Downey Jr.) "I love you 3000." It's a line brought up several times in the film, and one that's become a bit of a meme - especially in China. And according to one fo the film's directors, that line came from one of RDJ's own children.

"That line is actually something Robert brought to the film," Anthony Russo told Watching Hollwood (as translated from Chinese). "He said that one of his children once told him, 'I love you 3000.' We told the story to the screenwriters, and eventually it became a line in the script."

Anthony Russo didn't specify which of the Downey children said the words originally, but the sentiment stands - and is one you can use in your own life.

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