There's a rumour going gangbusters on the internet right now that's making its way into the celebrity zeitgeist, and it has everything to do with actors Aaron Taylor-Johnson and Joey King, and a certain alleged affair.

Taylor-Johnson and King recently starred in the 2022 movieBullet Train,alongside Brad Pitt.

They are also both in long-term relationships: Taylor-Johnson has been with his wife, director Sam Taylor-Johnson since he was 18, while King is currently engaged to director and producer Steven Piet.

In comes the cheating rumours....

On January 17, TikTok creator @thekylemarisa posted a video reading an anonymous blind item about Taylor-Johnson and his co-star King.

According to the blind item, the two allegedly hooked up on the press tour forBullet Train, and have continued their alleged affair post-filming and press.

The video has since gone viral on TikTok, followed by a sea of commentary on Twitter, unpacking the allegations.

me telling my bf about the joey king / aaron taylor johnson rumors while he just tries to prepare our breakfast pic.twitter.com/Ok8GFNsOLO

— kosher mill pickle (@pinkosperson)

Just found out why Aaron Taylor-Johnson and Joey King are trending and ........ pic.twitter.com/W8qKP1Qzi0

— K (@hatethispart111)

Neither King, Taylor-Johnson, nor their partners have spoken publicly about the claims.

Taylor-Johnson's marriage has long faced scrutiny because of him and his wife's 23-year age-gap.

They met in 2008, when he was 18 and she was 42, when he starred in her debut film. He proposed to Sam as soon as they wrapped.

"We had never been on a date, or even kissed. And a year to the minute after we met, exactly one year to the minute, I got down on one knee and asked her to marry me," Aaron told Harper's Bazaar.

"I knew instantly that I wanted to spend the rest of my life with this person."

The couple announced their engagement in 2009, and in July 2010, they welcomed their first daughter, Wylda Rae.

Two years later, in 2012, their second daughter, Romy Hero, was born.

Joey King met her now-fiancé Steven Piet on set when filming the TV series,The Act, in 2019.

The couple got engaged in February 2022.

"I never knew happiness could be so powerful that it can take the air from your lungs, overwhelming every part of you that you can't help but feel your eyes well from the undeniable joy," she wrote on Instagram announcing the news.

"The date was 2/2/22 when you asked me to marry you and made me the luckiest lady alive. I love you more than an Instagram caption could ever do justice.

"Hanging out with you forever sounds like a real dream, so let's do it."