ABC News' Kim Berryman reports:

In a revealing new interview, singing and acting superstar Jennifer Lopez said she has never had Botox or plastic surgery, but wouldn't rule it out.

"I reserve the right not to know right now, and don't judge anybody who does it," Lopez told People magazine.

The interview in which she discusses her career, family and love life will be available in the People issue to hit newsstands Friday.

Lopez, 43, opened up to People about her emotions following her split from singer Marc Anthony, with whom she has 4-year-old twins Max and Emme.

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Lopez admits that she wept as she recorded a new song about the end of her seven-year marriage to Anthony, and called it "brutal."

"It was a very difficult time in Jennifer's life," Carlos Greer, a reporter with People, told " Good Morning America."

"She even told People that she had problems getting up and going to the set [for her new movie] because she was so sad."

Her divorce is still pending, and she acknowledged that it was a challenge to her as a mother to Max and Emme.

Greer said, "They're turning 5 and they're starting to ask questions like, 'Didn't Daddy used to live here? When is he going to sleep here again?' And so she tries to explain, but that's very tough on her."

Lopez told the magazine that her biggest disappointment was that "I wasn't going to be able to put together that perfect family unit, that fairy tale for them," she said, speaking of her children. "I don't want to damage them in any way."

Lopez is getting a lot of support from beau Casper Smart, her choreographer and live-in boyfriend, 25.

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"I ask him, 'Why don't you find a young girlfriend and get out of here? What do you want with me?'" she joked to the magazine.

But the People magazine representative said Smart had an answer for Lopez.

"He counters that by saying he's been into sports and he's, you know, beat up pretty bad so she's going to be the woman who's pushing him in a wheelchair," Greer said. "So they have a very playful relationship."

But Lopez, who has been married three times before, says she's taking things slow in this relationship.

"I'm making decisions for three. … I'm Mama Bear," she said. "I want to make sure everything's right. I have been hasty in the past. Super hasty."