Meg Ryan and Russell Crowe

Hollywood good girl Meg Ryan stunned the world when she cheated on then-hubby Dennis Quaid with her Proof of Life co-star Russell Crowe. The two stars began a short-lived and very high-profile romance while filming in Ecuador while Ryan was still married to Quaid. But apparently all was not as it seemed. Ryan insists that she and Quaid had split before she got together with Crowe. "Russell wasn't a homewrecker,€ she said during an interview with Oprah Winfrey. "He didn't talk and I'll always be grateful to him for that. But I did not leave my marriage for him. I left because it was not working."