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Jennifer Garner Says Mark Ruffalo Almost Quit “13 Going on 30” After Rehearsing ‘Thriller’ Scene: ‘Not for Me’

The former costars reunited at Ruffalo's Hollywood Walk of Fame Star ceremony

<p>Columbia Tri Star/Kobal/Shutterstock </p> Mark Ruffalo, Jennifer Garner

Columbia Tri Star/Kobal/Shutterstock

Mark Ruffalo, Jennifer Garner

13 Going on 30 fans almost missed out on Jennifer Garner and Mark Ruffalo’s iconic “Thriller” dance scene!

On Thursday, the Poor Things actor, 56, was the recipient of a star on the Hollywood Walk of Fame in Los Angeles.

Related: Was Mark Ruffalo's Walk of Fame Star Ceremony the Best One Ever? The Photos Say Yes

During the ceremony, his friend and former The Adam Project costar, 51, spoke at the podium in his honor and reminded those in attendance that the world was almost robbed of a pop culture moment 20 years ago.

While speaking at the event, she wondered if Reese Witherspoon, Jennifer Aniston, Gwyneth Paltrow and Keira Knightley — all of whom have also played Ruffalo's onscreen romantic interests onscreen — agree with her that Ruffalo owes his "rom-com success to the scruffy hair, the untucked cute button down, both of which became like the norm for cute guys everywhere for the next 20 years."

<p>Frazer Harrison/Getty</p> Mark Ruffalo and Jennifer Garner

Frazer Harrison/Getty

Mark Ruffalo and Jennifer Garner

“I wonder if these esteemed ladies enjoyed Mark's anxiety as much as I did,” Garner continued. “I wonder if he tried to drop out of their films, like he did out of ours after the first rehearsal of the 'Thriller' dance where Mark went from kind of shocked that we actually had to do this, to antsy, to deathly quiet, to 'Bro, this is not for me.’"

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In 13 Going on 30, Garner played the adult version of Jenna Rink, a teen who wakes up to find herself a 30-year-old magazine editor in 2004. Jenna finds herself at a party that no one seems to be enjoying — that is until she requests the DJ booth cue Michael Jackson’s “Thriller.”

<p>Tracy Bennett/Columbia Tri Star/Kobal/Shutterstock </p> Jennifer Garner, Mark Ruffalo

Tracy Bennett/Columbia Tri Star/Kobal/Shutterstock

Jennifer Garner, Mark Ruffalo

Garner’s character recruits a reluctant Matt "Matty" Flamhaff (Ruffalo) to do the choreography featured in Jackson's 1983 music video, thus saving the party.

Related: '13 Going on 30' is 16 Years Old Today! See What the Cast Is Up to Now

The pair jokingly recreated the moment on Thursday.

<p>Matt Baron/BEI/Shutterstock</p> Mark Ruffalo and Jennifer Garner

Matt Baron/BEI/Shutterstock

Mark Ruffalo and Jennifer Garner

The ceremony was not the first time Garner revealed that Ruffalo wanted no part of the routine. In March 2021, Garner told theSkimm that he almost drew the line at that dance scene.

"We started to learn the dance. Our first rehearsal, I think it was Mark and Judy [Greer] and me, and Judy and I were both dancers growing up and poor Mark didn't know that. And he came in and he hated the rehearsal process so much he almost dropped out," she said.

<p>Columbia Tri Star/Kobal/Shutterstock </p>

Columbia Tri Star/Kobal/Shutterstock

The Avengers actor also commented via Instagram on PEOPLE’s coverage of the conversation.

"It didn't help that it took me 3 hours to learn what Jen mastered in about 20 minutes!" he joked at the time.

<p>Michael Loccisano/WireImage</p> Jennifer Garner and Mark Ruffalo

Michael Loccisano/WireImage

Jennifer Garner and Mark Ruffalo

Garner, who was a last-minute fill-in speaker to replace Laura Dern and Don Cheadle Thursday, could not have been more proud to have worked with and grown close to her costar.

"To work with you, Mark, is to love you, I don't care what anyone says," Garner said, adding that it was “a privilege” to know him.

Ruffalo is the 2,772nd person to receive a star on the famed street, according to a press release.

Marvel Studios President Kevin Feige, actors Barry Keoghan and Lili Reinhart, and Avengers director Joss Whedon were among his peers who attended the event.

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