Angelina Jolie claims Brad Pitt made her believe in the idea of one true love.

The 'Salt' actress - who has previously been married to actors Billy Bob Thornton and Johnny Lee Miller - believes she will be with the actor, who she raises six children with, for the rest of their lives.

When asked if she believes in one true love, she said: "He makes me feel like there is.

"Will we grow old together? Of course. We wouldn't have six children if we weren't absolutely sure of that."

The couple - who raise Maddox, eight, Pax, six, Zahara, five, Shiloh, four, and two-year-old twins Knox and Vivienne - are left exhausted by their large brood but Angelina admits she and her 46-year-old partner are still considering expanding their family further.

She added in an interview with US TV show 'Nightline': "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?' And yet we still love the idea of having more children.

"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 honour to take care of them."

Explaining how the couple take care of discipline in the home, the 35-year-old beauty admitted she relies on Brad to keep their sons in line while she takes care of the girls.

She admitted: "I think girls and daddy can just bat their eyes. And the boys, funnily enough, can kind of get me."