Sophie Turner worked with Kit Harington for years on the hit HBO series “Game of Thrones.”

But there’s one thing the pair, who played brother and sister on the show, never had to do: film intimate scenes together.

The two finally had to tackle an on-screen romance in their upcoming film “The Dreadful,” after Turner suggested Harington as the lead.

“I sent the script to Kit and he kind of sent me a message back going like, ‘Yeah, I’d love to, but this is going to be really fucking weird, Soph,’” Turner shared during a stop by “Late Night With Seth Meyers” last week.

“And I was like, ‘What is he talking about?’” she said. “Then I was reading it and I’m like ‘Kiss, kiss, sex, kiss, sex.’ And then I’m like, ‘Oh, shoot ― that’s my brother.’”