When Bailey Bryan appeared on the Songfacts Podcast
, she said "Sober" is about "how being in love with the wrong person feels like being drunk."
In the song, she asks her partner to "think of me when you're sober," which sounds like an alcohol-assisted encounter that at least one of them will regret in the morning.
"You could listen to it and think it's about a drunk hookup," she explained, "but to me it's about being in the moment with somebody and being like, 'I love you,' but already knowing the reason it's not going to work. You know it might wreck you a little bit. Like being trashed, you know you'll feel it in the morning."