Nicole Kidman is reportedly feeling betrayed and shattered by the seemingly sudden end of her 19-year marriage to Keith Urban — but insiders say the union has been a showmance for some time and that she played a big role in the shocking split.

“He was tired of hearing her rave about her sexual reawakening and animal attraction to her costars and has been living his own life,” an insider tells the National Enquirer.

Sources say that 57-year-old country crooner Keith pulled out of the marriage in June and moved into his own pad in Nashville while Nicole, 58, stayed home, trying to hide the split from the public before filing for divorce on Sept. 30.

“They were using the time apart to quietly and amicably work out the details of the divorce,” says a source.

Daughters Sunday, 17, and Faith, 14, will reportedly spend 306 days with their mom and 59 days with their dad going forward.

Insiders say Nicole greased the skids for the split with her passionate public boasts about her hot costars.

<span class="wp-caption-text">Netflix</span>

Netflix

Jaws dropped last year when Nicole said she was “so turned on” doing sex scenes with 28-year-old costar Harris Dickinson for the erotic drama Babygirl that she had to temporarily hit the brakes on production, according to The Sun.

“There were times when we were shooting where I was like, ‘I don’t want to orgasm anymore,’ ” she confessed. “I don’t care if I am never touched again in my life … it was almost like a burnout.”

She said she found it “liberating” to play such a “raw and dangerous” character.

<span class="wp-caption-text">Netflix</span>

Netflix

She also praised much-younger hunk Zac Efron, 37, for their on-screen romantic moments while shooting the Netflix rom-com movie A Family Affair. And in July, Keith apparently hung up during an interview with Australia’s Mix 102.3’s Hayley & Max in the Morning when he was asked about watching her shoot steamy scenes.

“I think his team hung up on us because they didn’t want us to ask that question,” the producer said on air. “He’s gone — see you, Keith!”

<span class="wp-caption-text">Getty Images</span>

Getty Images

Meanwhile, fans have speculated that Keith is canoodling with 25-year-old Maggie Baugh, a member of his band — and he even changed some lyrics in a recent performance to include her name.

“Their lives were moving in different directions, and once he set up his own place, the writing was on the wall,” notes one source. “People close to Keith felt like the split was inevitable.”