They've fought back against rumors their marriage was headed for a split, but now Nicole Kidman has revealed her very real fears that one day, Keith Urban would leave her.

In an interview with CBS Sunday Morning, Kidman opened up about being an older mother, and discussed how all she wants more than anything else in her life is to be able to see her daughters, Sunday Rose, 8, and Faith Margaret, 5, grow up, adding that she also just wants to hope and make sure that she and Urban are still together when that day comes as well.

"It makes me sad-I would just like to be here long enough to have my children gwo up and for me to see them thriving," she said. "That's all I ask. And that my husband and I are with each other. Simple! Simple requests. ...Just wanting to be here. I'm an older mother, so, you know...Oh, please let me be here. Please, please. But, hey, what will be, will be."

Kidman is also a mother to adopted children Isabella, 24, and Connor, 21, with ex-husband Tom Cruise.

Her declaration comes on the heels of numerous reports that she and Urban were suffering from marriage troubles, which have plagued them for months.

The pair were initially rumored to have not spent more than two months together earlier this fall, something they tried to fight back against with multiple public appearances together, including at the InStyle Awards and Country Music Awards. In addition, they also celebrated Urban's 49th birthday and made a joint appearance together on The Tonight Show with Jimmy Fallon.

However, rumors have still persisted, including ones which claimed they had enrolled in a Marriage Boot Camp to try and fix things, which forces Urban to finally address the rumors and call them out as being false.

"The fact that we live somewhere where we are not being photographed all the time, the fact that we are not documenting every single thing that we do as a family, we are very private people, it makes you-it makes it possible for people to make up that stuff because you are not always there to defend it," he said at the time. "But then you get angry, 'Like why do I have to defend this?' The people who come and see us they don't read that stuff. It is gibberish."