Nicole Kidman and Keith Urban are one of Hollywood's most famous couples.  Because of their A-list status, their marriage have been inevitably bombarded by divorce and cheating rumors.

According to a new report, it looks like Nicole is at the brink of calling it quits because of a new flame.  How true?

"An insider divulged to Star magazine that Nicole and Alexander's [Skarsgard] undeniable on-screen chemistry jut may break Keith's heart," Celeb Dirty Laundry noted.  "Nicole and Alex are currently filming the HBO drama Big Little Lies and the co-stars have some hot, hot, on-camera scenes that apparently have translated into a big time off-screen attraction."

"There have been numerous reports over the years of problems in Keith and Nicole's marriage, more and more so recently. The country music megastar and the Academy Award-winning actress haven't spent much time together in the past two years. Most of the time the couple isn't even on the same continent, let alone the same house," the article continued.

This was not the first time the couple was plagued by nasty speculations. Previous reports are claiming that the "American Idol" judge could be cheating with his fellow judge, Jennifer Lopez.  According to rumors, the two have been hooking-up after the country singer learned about Nicole's decision to go "all natural."

"Is Keith Urban hooking up with Jennifer Lopez after his wife, Nicole Kidman had her breast implants removed?" Celeb Diry Laundry previously revealed in an old report. "Will Nicole Kidman lose Keith Urban to the curvy American Idol judge?"

"According to a new report from NE, Nicole Kidman has been on a big health kick where she is trying to be completely natural, as in no foreign things in her body. A pal revealed, 'She doesn't want anything that could be toxic inside her body.'"

Stay tuned for more Keith Urban and Nicole Kidman news here!