If this is true, it won't be the first time it's happened. On set romances that break up marriages is old hat in Hollywood. Brad and Jen, Reese and Ryan…Well there's a new lady rumored to have broken up a marriage, and it's Maria Bello.
She and Brendan Fraser met on set while filming the "Mummy" in China, and according to people in the crew, it looks like they got a little too close. Hopefully it's just a rumor, since Brendan has three kids and has been with his wife for 9 years.