[WARNING: THE FOLLOWING CONTAINS SPOILERS FROM "GAME OF THRONES"]
The 32-year-old actress also included the hashtags: “#jeneregretterien,” which means “I regret nothing” in French and “#okmaybehereiseetheresemblance.”
The co-stars are pictured with their heads poking out of a viking couple cardboard cutout. Harington plays Jon Snow, Daenerys’ nephew and love interest.
In Sunday’s episode of “Game of Thrones,” it was revealed to Daenerys that Jon Snow, her current love interest, was also her nephew.
Clarke told Entertainment Weekly after the episode aired that Daenerys’ real problem with her relationship with Jon Snow is his claim to the Iron Throne — not the incestuous nature of their relationship.
“The related thing, to her, is so normal,” Clarke told the outlet. “She could have easily married her brother. It’s not a thing. It’s a thing for Jon, but let’s just forget about that. The main thing is we’re up for the same promotion and I’ve been working for it for my entire existence.”
Harington had previously spoken about how kissing Clarke on the show was “really odd” because of their friendship.
“Emilia, Rose and I are good friends, so even though you’re actors and it’s your job, there’s an element of weirdness when the three of us are having dinner and we had a kissing scene that day," Harington, 32, told The Daily Mirror after the Season 8 premiere.
It's not that weird, however. He joked, “She’s wonderful and I love Emilia and I’ve loved working with her. And it’s not hard to kiss her, is it?”
Fox News’ Jessica Sager contributed to this report.