When FP embraces Jughead at the end of the retirement party, reveals that he knows that Jughead disobeyed him, kisses Jughead and says "You broke my heart"- this scene is a reflection of a scene from The Godfather II. Micheal embraces his older brother, reveals that he knows Fredo betrayed the Correleone family, kisses his brother and says "You broke my heart."
FP says he was in Shankshaw jail, it's Shawshank reversed. As in the name of the prison from The Shawshank Redemption.