The track was written by Carpenter, Julia Michaels, JP Saxe and its producer John Ryan.

The soft rock and upbeat pop song with bossa nova-tinged sounds was released by Island Records as the second single from the album on February 18, 2022.

[2] The song was written by Carpenter, Julia Michaels, JP Saxe and John Ryan in New York on Summer 2021.

[1][8] Musically, "Fast Times" is a two minutes and fifty-five seconds upbeat pop and soft rock song with bossa nova-tinged sounds.

[14] Recording and management Personnel Credits adapted from Emails I Can't Send liner notes.