: Sheldon eventually visits Tam in his office and "forgives" him, though Tam remains hilariously confused about the severity of the grudge.

: Tam stayed in Texas after meeting a girl, leaving Sheldon to move to California alone.

The fourth episode of The Big Bang Theory's final season, serves as a bridge between the flagship series and its prequel, Young Sheldon . It resolves a long-standing mystery: why has Sheldon Cooper never mentioned his first-ever best friend, Tam Nguyen? 🌪️ The Conflict: "He Knows What He Did"