J. Lo: 'I'm Sad' for Tom and Katie

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Jennifer Lopez is opening up for the first time in a new interview with ET's Mark Steines about her friends Tom Cruise and Katie Holmes' recent split.

Lopez, who split last summer from Marc Anthony, tells ET, "I'm sad for them. They're both really lovely people, and just like Marc and I, it's not what you want to happen. You fight and you try until you realize you can't anymore."

She says that she hasn't spoken to Tom or Katie, but she's "thought about it a lot."

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"I heard about it when I was in South America and I was stunned," she shares.

She says she's concerned about how the split will affect Tom and Katie's daughter Suri, as well as Tom's two children with ex-wife Nicole Kidman, Connor and Isabella: "You know I just wish them, you know, peace in their decision. And really for Suri and their other children as well, because you become such a family, it's not just Suri, it's Connor and Isabella and everybody, you know, you all become a family. And when that breaks apart, nobody wins, everybody's heartbroken in some way. And I just wish them peace."

The Shocking Way That Katie Told Tom About Divorce

Speaking of headline-making news, Jennifer also expanded on her Today show revelation this morning regarding her shaky future as an American Idol judge. While panel mate Steven Tyler just made it definitively known he would not return, Lopez tells ET that, despite appearances, she has yet to make up her mind either way on the matter. 

"The decision is like, this close to being made," she explains, illustrating with a pointed hand gesture to indicate she's on the very precipice of deciding. Although all signs seem to point at Lopez bowing out, she tells fans they need not lose hope just yet.

VIDEO: Jennifer Lopez Explains her 'American Idol' Breakdown

"All hope is never gone," she teases. "It pulls at me, I love it. But I also know that there's a lot of things that I put aside for it and I just don't know how much longer I can do that."

Watch the video for more from J.Lo on her Idol tipping points, plus what her kids think of her role as sexy saber tooth tiger Shira in the new movie, Ice Age: Continental Drift.