In Godfather III, when VIncent is shaving Michael, and they are plotting as to how Vincent is going to approach Lucchese, Michael tells Vincent that he must tell Lucchese that he ( Vincent ) is in love with Michael's daughter and that Michael knows this and he will kill Vincent if he does continue with his duaghter. I always felt that while Michael was coaching Vincent as to what he must tell Lucchese in order to gain his trust, at the same time he was sending a real message to Vincent letting him know what would happen if he did continue a relationship with Mary.

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