Angelina Jolie’s biological clock only started ticking when she met Brad.

The actress, who is now rumored to be keen on adopting a fourth child from Haiti, says her Brad romance finally got her biological clock ticking after homing in on him during the filming of Mr & Mrs Smith, when he was still with Jennifer Aniston.

“When I met him…I didn’t want to get pregnant”, Jolie recalls.

At the time, the actress had already adopted Cambodian orphan Maddox, now 8 and was in the process of adopting Ethiopian daughter Zahara, now 5.

Now Ange reveals: “I always wanted to adopt, but I never had the desire of experiencing biological motherhood.”

In a touching tribute to Brad, Jolie says he “taught me to be more patient and to enjoy everything that exists in the world.”

Since, the pair have had three biological children, three-year-old daughter Shiloh and 18 month-old twins Vivienne and Knox.

As she makes a humanitarian pilgrimage to the Haiti earthquake zone, the actress says she’s determined to make her kids conscious of how lucky they are in Tinseltown.

“I want to raise my children correctly and help them understand the inequality that exists in the world”, Jolie told Australia’s Marie Claire magazine.