“Till Forever Falls Apart” is an eruptive ballad about loving someone through every obstacle, and knowing that your love will never break. Throughout the song, Ashe and FINNEAS use metaphors about the end of the world to paint this picture. Although most contemporary pop writes about love in a romantic context, this song could be viewed in a platonic-friendship perspective, making it stand out from the over-saturated landscape of romantic ballads.
Sonically, the song has a vintage feel, with heavy drums and guitar throughout.

In a livestream counting down the music video’s premiere, Ashe stated that she was inspired by the iconic 1930s dance duo, Fred Astaire and Ginger Rogers, when creating the music video.

FINNEAS and Ashe have previously worked together, most notably on the viral hit “Moral of the Story”, which took off after it’s use in the soundtrack for the Netflix Original movie To All the Boys: P.S. I Still Love You.