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Kieran Culkin loved filming 'Succession' scenes with Sarah Snook.

The 42-year-old actor played Roman Roy in the HBO TV series, and Kieran has revealed that he relished the experience of filming with Sarah, who played Shiv Roy on the hit show.

Asked to name his favorite screen partner, Kieran told Variety: "Sarah Snook. You're not supposed to have favorites; I have a favorite.

"There would be times, just for fun, I would take her line, and then give her a little side-eye. And then the scene would go on, and when it was my line, she would take mine and go, 'Got you, b****.' Right before we were about to finish shooting, she goes, 'Are you ready to cry? No one's ever going to cast the two of us in anything. We're never going to work together again.' I just bawled.

"When you're on a show like that, and we play brother-sister, people will always make that comparison. So she's probably right."

Kieran admitted that Sarah remains one of his "favorite people in the world". However, the former co-stars rarely speak to each other these days.

Asked if they still see each other a lot, Kieran replied: "She lives in Australia, so it's hard to keep up.

"I'm not the best with the phone thing. I always relied on the fact that there was going to be another season. But she's my son's godmother and one of my favorite people in the world."

Meanwhile, Kieran previously revealed that he he actually enjoyed himself during the writers' strike in 2023, because it allowed him to spend more time at home.

The actor told The Hollywood Reporter: "It had been really ... probably shouldn't say, I don't care ... lovely for me. I'd been hiding behind it. I'm like, 'No work? Fantastic.'"