Because Carrey's two marriages and multiple engagements never lasted longer than seven years, Lieberman said that one of the reasons for the split could have been his fear of commitment.
"Reports claim that Jim got fed up with Jenny's ongoing cajoling of him to help her career," Lieberman said. "But Jim has a history of being a commitment-phobe, so it could well be that he was just feeling smothered after so many years in the same relationship."
Perry said that the spilt may have more to do with McCarthy's priorities -- her son and her efforts to increase awareness about childhood autism.
"They were a wonderful duo," Perry said. "It sounds like this is a case of two big personalities that have priorities of their own going in opposite directions. Also, there have been rumors that Jim has been battling depression. McCarthy already has a son with special needs, and it sounds like she doesn't have the time to focus on him and his significant amount of needy attention."
Kate Winslet and Sam Mendes