Is this the most cunning of "keep your friends close but your enemies closer"
Connie to Michael: And you stood Godfather to our baby -- you lousy cold-hearted bastard
As the book informs, Michael didn't want to do this. Connie nags Kay, Kay nags Michael. Michael agrees, but tells Kay that it doesn't fix Connie's real problem - which is that she married the wrong type of guy. He doesn't feign close friendship with Carlo.