In " Girl Meets the Secret of Life " (Season 2, Episode 3), Lucas Friar's past is revealed by his old friend Zay Babineaux, who joins John Quincy Adams Middle School. The episode explores themes of change and growth as Lucas faces his aggressive history and chooses a better path, while Cory teaches the class that "people change people". You can find full details on this episode at Girl Meets World Wiki and IMDb . Girl Meets the Secret of Life - IMDb