"Mine" finds Bazzi describing why he is so obsessed with his girl. He explained the story behind the song to Genius
"It was a really hot summer day. I was hanging with some friends and some girls by the pool. We were just having a few drinks and smoking, nothing crazy. I went inside to grab a drink and that melody just hit me in the head. I instantly knew what I wanted the entire song to look like. I started voice noting. I have a really early voice note of what the song was like. But you can tell exactly what it molded into from that.
I went to the studio literally the next day and the song was done. I did like one edit a few weeks after, changing the chords and the hook, but for the most part it was finished because that energy and that vibe I felt that day was so specific, it was really easy to translate it into a track."