Brad Pitt and Angelina Jolie's children are "putting on the heat" for them to get married.

The Hollywood couple have been together since 2005 and raise six children - Maddox, 10, Pax, seven, Zahara, six, Shiloh, five, and three-year-old twins Knox and Vivienne – who Brad admits are keen for them to tie the knot.

In an interview with talk show host Ellen DeGeneres which is due to air tomorrow (22.09.11), he said: "The kids are putting on the heat. They really are."

However, Brad, 47, and Angelina, 36, have always maintained they would not wed until gay marriage is made legal throughout the U.S.

He said: "We live in this great country that is about freedom. It is defined by our freedom and equality and yet we allow this discrimination to go on every day and that's not what we're about."

When asked by Ellen if gay marriage was legal, they would marry immediately, Brad replied: "It seems."

The 'Moneyball' star has also addressed comments he made about his ex-wife, Jennifer Aniston, in which he is quoted saying he "pretended the marriage was something it wasn't," saying he feels his statement was taken out of context.

He said: "I don't know what was pieced together or put together. It has no reference to the past. And I think it's a shame that I can't say something nice about Angie without Jen being dragged in. You know, she doesn't deserve it."