Dennis Quaid cheated on Meg Ryan: After eight years of silence, Meg Ryan is revealing details of her failed marriage to Dennis Quaid and the reason for their surprising divorce. Ryan, 46, famously had a fling with actor Russell Crowe and the affair ended her marriage to Quaid. But she tells the new issue of "InStyle," "Dennis was not faithful to me for a very long time, and that was very painful. I found out more about that after I was divorced." Ryan says she purposely took a break from the public spotlight to heal from the split.