At the New Year's Eve party in the Cuban ballroom, there is in aerial shot that clearly shows Michael with his hands around Fredo's face amidst a very crowded room to deliver "you broke my heart". However this had not taken place yet because Michael is eating at the end of the table with Fredo and Senator Geary *before* the midnight celebration. "You broke my heart" comes after the stroke of midnight. Also, the room was far less crowded as they were eating when a unit of soldiers march thru the middle of the ballroom. See more
The godfather was born Vito Andolini, in the town of Corleone in Sicily. In 1901 his father was murdered for an insult to the local Mafia chieftain. His older brother Paolo swore revenge and disappeared into the hills, leaving Vito, the only male heir, to stand with his mother at the funeral. He was nine years old.
[gunshots and screams
[subtitled from Italian
They've killed the boy! They've killed young Paolo! They've killed your son Paolo!