Russell Crowe, Meg Ryan, and Dennis Quaid
The media learned of Meg Ryan and Russell Crowe's relationship while the couple was shooting Proof of Life in Ecuador. The only problem? Meg was married to actor Dennis Quaid at the time. When the news of their affair broke, Quaid filed for divorce.
Although fans were quick to point the finger at Meg, she said that the blame was shared. "Dennis was not faithful to me for a very long time, and that was very painful," she said. "I found out more about that after I was divorced... but Russell didn't break up the marriage." Meg and Russell split by Christmas of 2000.