The two actresses reminisced while on The Ellen DeGeneres Show promoting Avengers: Endgame on Tuesday when Elle DeGeneres asked them how they met.
When the 61-year-old host asked if they texted each other before meeting the first time, Larson, 29, said, “We did.”
This raised some red flags for Johansson as that wasn’t the case, so she asked Larson, “You don’t remember how we met?”
“I do. At dinner,” Larson replied — which also wasn’t right.
“No! Clearly, it made an impression on me but somebody else didn’t care,” Johansson, 34, declared. “We worked together!”
The two first worked together on 2013’s Don Jon, which was directed by Joseph Gordon-Levitt, who also starred in the film.
Larson appeared shocked, saying, “I didn’t even think about that because I just felt like I was basically a glorified extra and you were Scarlett Johansson.”
“I noticed you, Brie. I noticed you. You were not a glorified extra,” Johansson said, smiling.
The Ellen episode comes after they both attended the Los Angeles premiere of Avengers: Endgame on Monday night.
The pair also dressed a little alike. While their gowns were very different styles — Larson attended in a lilac Celine by Hedi Slimane slip gown; Johansson wore a Versace chainmail midi dress — they both had on similar Avengers-inspired bracelets that reflected the Infinity Gauntlet in the film.
Johansson shared some powerful words about her experience playing Black Widow at the premiere.
“I don’t know what to say, I’m extremely overwhelmed,” Johansson told the crowd. “Thank you so much for this past decade of time’s been absolutely life-changing.”
RELATED VIDEO: Family Date Night! Liam Hemsworth Hits the ‘Avengers’ Premiere with Brothers, Wife Miley Cyrus
She continued her emotional speech, saying, “It’s been such a pleasure to come to work every day, I feel incredibly fortunate to be with such a beautiful cast of creative people, open-minded people, and it’s been an incredible journey. Impossible to put into words, thank you so much.”
Johansson has played Natasha Romanoff/Black Widow since Iron Man 2 in 2010 and has reprised her role in multiple Marvel Cinematic Universe films, being one of the surviving Avengers after the events of Infinity War.
She’ll next appear as Black Widow in the character’s first solo movie, rumored to begin filming this year.
Larson made her Marvel Cinematic Universe debut in March’s Captain Marvel, which has grossed over $1 billion at the worldwide box office.
Avengers: Endgame is in theaters Friday.