Michael Corleone has been through a lot. So had his wife.

The poor woman had to wait it out for him while he was hiding out in Europe, she married him even though he got married and divorced in the gap of them not speaking while he was hiding out, she mothered his children.

But she doesn't understand him. She doesn't understand his family and what they do.

Not like you. His childhood friend, the one person who knows everything he's done from the time he was in diapers and still loves him enough to give him hell for it.

But if he goes through with it, Kay will have a real reason to leave with the kids. The woman's already done with him, she just needs a push. He doesn't want to give that to her.