Game of Thrones Cast Reacts to Jon-Dany's Union in Game of Thrones Season 7 Finale

While Jon Snow and Daenerys Targaryen were getting it on in Game of Thrones' Season 7 finale, Bran Stark's narration revealed that Jon's real name is Aegon, and the son of Rhaegar Targaryen and Lyanna Stark. But intercut between those scenes was a forlorn Tyrion Lannister, as he watched Jon go into Daenerys' quarters, and then stood there pondering.

If it wasn't clear to you why he had a worried look, Peter Dinklage - the actor who plays Tyrion - has helpfully provided an insight into the character's thought process in a behind-the-scenes video released by HBO.

"It's dangerous for everybody involved," he said. "I'm sure it's good for both of them in the moment, but you don't even get the relief of how beautiful it could be or should be."

"No, it's not good. It should be, but it's not. It's Game of Thrones; there's a long history of romance not ending well in this show."

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Kit Harrington, the actor who portrays Jon, concurred: "I think they both know it's wrong, [and] they both know it's going to cause problems."

"But it's that thing, when you suddenly feel that deeply about someone and you go through those events together. It's like a runaway train, you can't stop it happening."

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Emilia Clarke - the woman behind Daenerys - even added her viewpoints on Jon and Dany being nephew and aunt, mimicking a vomiting reaction as how that would make them feel.

While Clarke might understandably have such a reaction given the perception of incest in our society, the Targaryen noble family has had a much different much view of it. In fact, Daenerys herself is the product of incest, given her parents were brother (Aerys) and sister (Rhaella).

Game of Thrones season 8 is expected in late 2018 or early 2019.

We discussed Game of Throne season 7 and what lies beyond on Transition, our weekly gaming and pop culture podcast. You can listen to it via Apple Podcasts or RSS or just listen to this episode by hitting the play button below.