Keith Urban and Nicole Kidman’s inner circle allegedly believes the singer is seeing someone else.

While it’s unclear if it started before or after the couple’s split, sources connected to Kidman, 58, told TMZ on Tuesday that “all the signs point to the fact Keith is with another woman.”

“Let’s just say Nicole doesn’t dispute that,” the insider added, “but she’s still shocked over it.”

Another Kidman source said, “It’s all over Nashville,” referring to where the former couple and their two daughters live.

The Post has reached out to Urban’s and Kidman’s reps for comment.

News broke Monday about the pair’s split after 19 years of marriage.

Kidman officially filed for divorce from Urban, 57, on Tuesday, TMZ reported.

The “Big Littles Lies” actress and the “For You” singer reportedly separated in June and have been living apart since then.

Sources have claimed that Urban initiated the split and moved out of their family home in Nashville, Tennessee, while Kidman allegedly did not want to separate and tried saving their relationship.

Insiders further claimed that Kidman has been taking care of their two daughters, Sunday Rose, 17, and Faith Margaret, 14, and “holding the family together through this difficult time since Keith has been gone.”

In addition, a source close to the former couple told People that their split “really hasn’t been a secret” to their inner circle.

“People close to Keith felt like the split was kind of inevitable,” an insider told the outlet.

The duo’s last public appearance together was on June 20 at the FIFA Club World Cup at the Geodis Park stadium in Nashville.

That same month, Urban failed to share a loving tribute to his wife on social media for their 19th wedding anniversary.

Kidman marked the anniversary by posting a black-and-white image of the duo cuddling in what appeared to be a dressing room. She captioned the snap, “Happy Anniversary Baby ❤️.”

Urban’s Instagram feed last featured Kidman on May 9, when he uploaded photos of them at the Academy of Country Music Awards.

Last year, Urban opened up about difficulties in his marriage as he honored the actress at the AFI Life Achievement Award gala.

During his speech, the Grammy winner admitted that he nearly “blew” up the pair’s marriage shortly after they tied the knot in 2006 because of his addiction struggles.

“Four months into a marriage, I’m in rehab for three months,” said Urban, who has reportedly stayed sober since. “I had no idea what was going to happen to us.”

Urban, however, recognized that Kidman “pushed through every negative voice” and chose to stay by his side.