Goodfellas followed the rise and fall of Henry Hill (Ray Liotta), who ended up betraying his friend and boss, Paul Cicero (Paul Sorvino), twice. Martin Scorsese has explored different genres in his career as a filmmaker, but he continues to be best known for his gangster movies, of which Goodfellas is still considered his best. Based on the non-fiction book Wiseguy, by Nicholas Pileggi, Goodfellas tells the story of real-life mob associate Henry Hill, who became fascinated by the mafia presence in his neighborhood when he was a teenager and started working for Paul Cicero at a young age.

https://screenrant.com/goodfellas-henry-paulie-betray-twice-reason/