'Game of Thrones' Director Opens Up About Controversial Sex Scene

April 21, 2014 — -- Another week, another shocking episode of "Game of Thrones."

ATTENTION: SPOILER ALERT

On Sunday's episode, "GoT" characters are still reeling from the shocking death of Joffrey as another character took things to a very uncomfortable level.

Cersei, played by Lena Headey, is mourning Joffrey, when Jaime, played by Nikolaj Coster-Waldau, walks in.

The two characters are brother and sister. By the end of the scene, Jaime ends up raping Cersei.

The Hollywood Reporter spoke with director Alex Graves about filming such a tough scene.

Read: 'Game of Thrones,' 'Mad Men' and Other Shocking TV Deaths

"The whole thing for me was about dead Joffrey (played by Jack Gleeson) lying there, watching the whole thing," Graves told THR. "I wanted to make sure I had Jack in there as much as I could. Of course Lena and Nikolaj laughed every time I would say, 'You grab her by the hair, and Jack is right there,' or 'You come around this way and Jack is right there.' "

On why Joffrey was so important to the rape scene, he said, "He is their first born. He is their sin. He is their lust, and their love -- their everything."

Graves added that even he was shocked when he read the script and knew he had to direct such a horrific act.

Related: 'Game of Thrones' Star Opens Up About Shocking 'Purple Wedding' Episode

"You read the scene and go, 'Wait, who's directing this?'" he added. "I'm never that excited about going to film forced sex."

What could possibly happen next on "GoT"?

"Episode three is in part an aftermath episode, where you settle and everything takes a turn toward the second half of the season, whether it's Castle Black, where the battle is coming and they realize they are going to have to do something," he teased. "Episode three is actually a series of really beautifully written scenes that smartly ends with Meereen, which is the beginning. You have all these beautiful scenes to play out, and then you get a big smashing end to the episode, which is like the opening sequence of a movie as the end. Three is really setting up the last three episodes of the season."