Billy Bob Thornton on Angelina Jolie pregnancy: "I’m just so happy for her"

Angelina Jolie's ex-husband Billy Bob Thornton is full of praise for his former wife.

"I think she was always meant to be a mother in so many ways," Billy Bob tells Extra. "I’m just so happy for her."

Jolie married Thornton, whom she had met on the set of Pushing Tin, on May 5, 2000. They split in 2002 shortly after she adopted Maddox, now 6, from Cambodia. Their divorce was finalized a year later, and although the actor was listed as Maddox’s father, Angelina received sole custody, and Brad Pitt officially adopted Maddox in 2006.

"I’m happy for the kids to have a mother like her and a father like him," Billy Bob, a dad himself of four, says.

The 52-year-old is left even more "astounded" by the Tomb Raider star's goodwill and humanitarian efforts.

"I’m astounded that somebody has that kind of passion and that much energy for something that actually does affect people and help people out," he says.