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'Game of Thrones' stars Kit Harington and Emilia Clarke on the season finale: 'we’re both kind of freaking out about it'

This image released by HBO shows Kit Harington, left, and Emilia Clarke on the season finale of "Game of Thrones." The series set yet another audience record Sunday with its seventh-season finale. Nielsen says an all-time high of 12.1 million viewers were tuned in to the wildly popular fantasy drama. An additional 4 million caught the episode on streaming channels. (Macall B. Polay/HBO via AP)

This image released by HBO shows Kit Harington, left, and Emilia Clarke on the season finale of "Game of Thrones." The series set yet another audience record Sunday with its seventh-season finale. Nielsen says an all-time high of 12.1 million viewers were tuned in to the wildly popular fantasy drama. An additional 4 million caught the episode on streaming channels. (Macall B. Polay/HBO via AP)

**SPOILER ALERT** 

Kit Harington felt really awkward making out with good friend Emilia Clarke during the season seven finale of Game Of Thrones.

The actor got naked for a revealing scene with Clarke’s character Daenerys Targaryen just after viewers discovered his real identity - his character is actually Daenerys’ nephew!

And he admits, relations aside, he was more than a little uncomfortable to get into bed with his pal.

“Usually you go into a movie and meet (your co-star) for the first time and you develop that chemistry over that time,” he tells Entertainment Weekly, “but if you’ve known somebody for seven years and shared this incredible journey in your own lives together... … we’re both kind of freaking out about it.

“I would be like, ‘What’s the sexual tension in this scene?’ and she’s like, ‘Stop talking about sexual tension!’ It’s a unique experience to be in as an actor and you know the world is watching.”

“(I would say), ‘Would you just stop? Just give me some sexy eyes, don’t keep talking about sexual chemistry all the time’,” Emilia chuckles.

It was a weird scene for her too, but she was more disturbed about the story line: “Ewwwww!” Emilia says. “I think that’s how it’s going to go. I get the toothbrush... (and brush my tongue).”

Meanwhile, heavy rockers Mastodon returned to the show two years after playing wildlings on the hit show.

In Sunday night’s finale, eagle-eyed fans spotted bandmates Brann Dailor, Bill Kelliher, and Brent Hinds as zombies in the army of the dead.

The band also contributed the song White Walker to the show’s Catch The Throne, Vol. 2 mixtape.