If you want to keep a secret, don’t let RM find out about it!

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RM has a history of accidentally spoiling BTS‘s comebacks, tours, subunits, Musters, and more.

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He even spoiled the Avengers: Endgame movie! So, it’s safe to say that James Corden‘s secrets aren’t, well, safe with RM.

On January 29, BTS guested on The Late Late Show With James Corden, where they performed their song, “Black Swan” on stage for the first time. They also played a hilarious round of hide and seek with James Corden and fellow guest Ashton Kutcher.

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Finally, after nearly a month of waiting, “Carpool Karaoke” with BTS will air on February 25. In this segment, James Corden drives his guests around while they sing along to songs.

Or, at least it looks like James Corden is driving. In a new interview with Entertainment Tonight, RM revealed that the host isn’t truly in control of his vehicle.

[The filming] took like three, four hours. I heard it’s the biggest car they ever rented, because we’re seven. Some van, like really hot inside…Like, 16 cameras inside, and Corden was not really driving it.

— RM

RM was as surprised as viewers were to find out that James Corden’s steering is all for show. “I didn’t know,” he said. “I thought he really drove.” So did we!

Now fans are having a field day with this information. Leave it to this “Spoiler King” to spill the beans!

Find out what else BTS revealed in their ET interview: