Despite the provocative title, there is no actual character named "Principal Gallagher's lesbian lover" depicted in the episode as a romantic partner. The title refers to a misunderstanding and the episode's central farce:
While Alan is dealing with the school, Charlie agrees to manage Alan’s chiropractic office. Bored and uninterested in the actual work, Charlie hires a "masseuse" named Tanya, effectively turning the medical office into what Alan later describes as a "brothel". Title Meaning and the "Lesbian Lover" 2. Principal Gallagher's Lesbian Lover
The title serves as a satirical nod to the brothers' tendency to view women through a highly sexualized lens. They are often baffled by professional or social dynamics they cannot easily manipulate or understand. Principal Gallagher's Lesbian Lover - IMDb Despite the provocative title, there is no actual