Kieran Culkin Talks About What It Was Like Working With His Famous Ex

The "Succession" star previously revealed he doesn't even like calling this person his "ex."

Kieran Culkin has no qualms about working with a famous ex.

The “Succession” actor recently joined forces with his former girlfriend, Emma Stone, for the two’s new movie, “A Real Pain.” Culkin stars in the film, while Stone produced the movie through her production company, Fruit Tree.

“She’s great,” Culkin said of Stone during an interview with E! News’ “The Rundown” at this year’s Sundance Film Festival, where “A Real Pain” made its premiere. “She’s a really wonderful person.”

He also said there’s an unexpected benefit to working with someone you know so well on a project like a movie, where you can face a lot of unknowns.

“It’s nice because you go into a job and most of the time you don’t really know anybody,” Culkin said. “But in this case, going in, I’m like, ‘Oh, OK, well at least that part’s taken care of.’”