"My Girlfriend's Girlfriend" is a song by the American rock band The Lemonheads. Released in 1992, it appears on their album It's a Shame About Ray. The song features catchy melodies and lyrics that explore themes of love and relationships. The track is notable for its blend of alternative rock and pop influences, showcasing the band's signature sound. It gained popularity in the early 1990s and remains a memorable part of The Lemonheads' discography, often recognized for its relatable storytelling and engaging rhythm.