Actress in controversial film with real life sex reveals why filming it was actually 'boring' and not what people think

An actress who starred in a controversial film with real life sex has claimed that filming it was actually 'boring'.

Sex is nothing new in movies, though the idea of real life sex on the screen is one that causes a lot of controversy - so much so that one controversial horror film with a real life sex scene was handed an 'anti-award' at one of the biggest film festivals.

Nymphomaniac is another movie that features actual sex, something that caused quite a bit of controversy amongst fans some 11 years ago.

The film, which is in two parts, tells the story of Joe, a self-diagnosed nymphomaniac who is discovered battered and bruised in an alley by an older bachelor, Seligman, who takes her into his home.

As he helps her with her injuries, she tells him the 'erotic' story 'of her adolescence and young-adulthood' - with Vol II carrying on with Joe's story.

With directing and screenplay conducted by Lars von Trier, Nymphomaniac features the likes of Charlotte Gainsbourg, Stacy Martin, Stellan Skarsgård, Christian Slater and Ananya Berg.

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Upon its release in cinemas, Nymphomaniac soon received a lot of attention for its orgasmic posters and use of digitally added porn doubles doing the actual sex scenes.

The concept of the body doubles was used as a way to avoid the cast actually having sex whilst maintaining the core theme of the story.

Skarsgård, who played Seligman, told The Hollywood Reporter that while they called the film a 'porno', it was more meant in an ironic way, adding: "But irony doesn't work well in print."

But on the set, the whole process was anything but sexy according to Stacy Martin, the actress who played the younger version of Joe.

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Speaking of the sec scenes, Martin told MTV in 2014: "Basically, we would do the scenes. What happens is that we have to agree on a position because of the CGI.

"Everything has to be set, so we would do the scene with Shia or whoever it was, and we would get little black dots on our bodies.

"It was very unerotic, very technical and it gets quite boring because then they have to do exactly the same with the porn doubles.

"But they're having real sex, and they put the two together."

However, all of this was worth it for Martin as she had the opportunity to work with a well-known director.

She said: "It's incredible, and I can be in a Lars Von Trier movie and not have sex. It's fantastic."