[1] "Girlfriend" was inspired by Sweet's divorce from his first wife, which occurred during the lead-up to the album's recording.

[2]In July 2017, Sweet told WXRT radio in Chicago that a friend and musician on the album, Lloyd Cole, convinced him that it was a good song worthy of the album.

He’d just been recently separated from his wife, and I don’t think he wanted to address the issue straight-on and say “girlfriend.” And I said, 'For God's sake, just call it 'Girlfriend.

"[2] In 1991, the music video for the song (directed by Frank Drucker) used clips from the anime film Space Adventure Cobra: The Movie.

[4] The song has been used in the Britney Spears film Crossroads (2002) and the music video game Guitar Hero II (2006).