"I think it would be hard to say no to the kids," Jolie, 35, said Monday morning on ABC's Good Morning America in an excerpt of an interview airing Monday night on Nightline.
But so far, it hasn't been an issue, as none of their six children seem to think it's a priority, either. "They're not asking," Jolie says. "They are very aware that nothing's missing."
Jolie, who stars in the new spy thriller Salt, touches on other aspects of her family in the interview, including whether it will get any larger. She and Pitt, 46, are torn about the issue – drawn to the idea of it, yet dreading how it would stretch them even thinner.
"We always have this thing, first thing in the morning, where we're really, really tired, and we look at each other and we wonder, Are we ever going to get sleep?" the actress says. "And yet we still love the idea of having more children."
Breakfast PandemoniumOffering a glimpse into their daily routine, Jolie says she's better at disciplining the girls, while Pitt is better at disciplining the boys. "I think girls and Daddy can just bat their eyes," she says. "And the boys, funnily enough, can kind of get me."
She also describes the pandemonium of the Jolie-Pitts at breakfast time. "We're like bartenders. We're like waiters," she says of herself and her actor-partner. "But we still, I think, are able to do it because we manage to have a great laugh. We do it together, and we find fun in it, and because of that, it doesn't matter if you don't get sleep. It's an honor to take care of them."
On the subject of love, Jolie is asked if Pitt is the love of her life – and if there is indeed one true love for anyone. "He makes me feel like there is," she replies. Asked if they'll grow old together, she doesn't hesitate. "Of course," she says. "We wouldn't have six children if we weren't absolutely sure of that."