A Game of Thrones actor who was 16 when he filmed a sex scene with a 33-year-old actress found watching it back “disturbing.”

In last week’s GoT episode King Tommen (played by Dean Charles-Chapman, 16) marries Margaery Tyrell (Natalie Dormer, 33) and they are shown topless and heavily panting next to each other after consummating their union.

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The young King then leans over and kisses his much older wife on the lips.

“It was very disturbing,” Chapman told MTV.

“Normally when my stuff’s on the telly, I don’t watch my own bits. But this was such a big scene for my character, so I checked it out.

“I found out about that scene by reading the script, and I was really shocked. I didn’t think it would have gone down like that on screen. I was nervous to just be pretend marrying Natalie Dormer.”

He said a lot of preparation went into the scene to ensure he was “comfortable” and that there were not too many background staff present.

It’s not the first time the hit program has pushed the boundaries of coitus on the screen, episodes regularly make headlines for their more graphic expressions of love.