Summary
- Young Sheldon season 5 reveals that George cheated on Mary, with his relationship with Brenda being the beginning of his unfaithfulness.
- George rationalizes his cheating by justifying lying in certain instances to spare others' feelings, but this doesn't explain why he cheats on Mary.
- While George's affair has not been shown directly on Young Sheldon, there are subtle hints and allusions to his behavior and the impact it has on his family.