: Horan originally wrote the song for his debut album but felt he could never quite get the studio production right.
The song’s emotional core is built on a central question: . The lyrics reflect a relationship between two people who have known each other since they were young, suggesting a "childhood sweethearts" or long-term friendship dynamic. : Horan originally wrote the song for his
For years, "So Long" existed primarily in the digital sphere as "Lyrics + Pictures" videos created by fans who captured audio from his live shows. : Horan originally wrote the song for his