Keith Urban's trick for dealing with Nicole Kidman's erotic S&M scenes in Babygirl

Blue is not his color – and being green with envy is not for Keith Urban, who knows how not to flinch during his wife Nicole Kidman's very erotic sex scenes.

Kidman, 57, has taken on one of her raunchiest roles yet, playing a powerful married boss who falls in love with a slutty young intern in the upcoming drama “Babygirl.”

The actress strips down for several intimate scenes with her co-stars Antonio Banderas, 64, and Harris Dickinson, 28, and recently revealed that she had an “orgasm” so many times that she had to stop filming.

Urban, 56, is reportedly unfazed by Kidman's heated on-screen encounters as he has learned to separate his wife from the on-screen character.

“When Keith watches her work, he sees it as her art,” a source told DailyMail.com exclusively. “She plays characters – she doesn’t play Nicole Kidman.”

According to insiders, Keith Urban managed not to cringe at his wife Nicole Kidman's very erotic sex scenes

They continued: “Keith doesn't flinch at scenes like this, he knows it's just part of the story.”

“He distances himself from seeing her as his wife, supports her and enjoys his work.”

The insider claimed that Urban “didn't want to know any details about the script” other than their “schedule” so he could “find out when they see each other and their kids.”

Urban may not have any concerns, but the Hollywood couple won't let their daughters Sunday Rose, 16, and Faith Margaret, 14, see their risqué films.

“Nicole is not ashamed in any way, but she doesn’t want them to see everything she does. She’s just a mother to her kids,” the source explained.

“Just as much that they don't go to every concert their father gives,” the insider clarified. “It’s a relief for Nicole to know they aren’t privy to some of her more revealing work.”

“Babygirl,” scheduled to hit theaters in the U.S. on Christmas Day, follows powerful CEO Romy, played by Kidman, who puts her career, life's work and marriage in jeopardy when she begins an intense affair with her young intern Samuel (Dickinson).

Earlier this week, Kidman recalled that performing the scenes with Harrison and Banderas, who plays her husband Jacob, was often too much to handle and called for a break.

Kidman, 57, has taken on one of her raunchiest roles yet, playing a powerful married boss who falls in love with a slutty young intern in the upcoming drama “Babygirl.”

“(Keith) is distancing himself from seeing her as his wife, supporting her and enjoying the work,” a source told DailyMail.com (Kidman pictured in Babygirl)

“There was a tremendous amount of sharing and trust and then frustration,” she said, according to The Sun. “It's like, 'Don't touch me'.”

“There were times during filming when I thought, 'I don't want to have an orgasm anymore.'

“Don't come near me.” I hate doing that. I don't care if I'm never touched again in my life! I'm over it.

“It was so present for me the whole time that it was almost like burnout.”

The Eyes Wide Shut actress previously described the S&M scenes as “liberating.”

Thanks to director Halina Reijn, who ensured that the actors were never pushed out of their comfort zone, Kidman felt completely confident while filming the sequences.

“It's kind of jumping off the cliff of, okay, I'm just going to drop everything and explore this with the people I trust, in a genre that's already set,” Kidman explained in a recent Q+ One session.

“You have your director at the helm saying, ‘I’m going to protect you. Nothing that will be in the film will be something that you are not comfortable with. Everything will be okay.”

Kidman and Urban don't allow their daughters Sunday Rose, 16, and Faith Margaret, 14, to watch their risier films (pictured next to their father)

Babygirl is being hailed as Kidman's raunchiest film yet – after she stunned fans with her racy sex scene with Liev Schreiber, 56, in The Perfect Couple

Kidman and Urban celebrated their 18th wedding anniversary on June 25 and celebrated the occasion with a sweet post on Instagram

The actress stressed that she also has “tremendous confidence” in her young co-star, who admitted he was “really scared” at times.

The Hollywood star received widespread praise for her performance after the film's premiere at the Venice Film Festival, where she was named Best Actress.

It marks Kidman's latest raunchy role after that sizzling romantic comedy “A Family Affair,” in which she starred alongside Zac Efron, 36.

The couple was reunited portrayed lovers 12 years ago in Buzzy crime Drama The Paperboy.

She also stunned fans with her racy sex scene alongside Liev Schreiber, 56, in The Perfect Couple.

In real life, Kidman and Urban celebrated their 18th wedding anniversary on June 25.

She commemorated the special moment with a sweet snapshot by the sea while Urban strummed a guitar.

“Forever,” she captioned the picture with a heart emoji.