A funky disco, dance love track, “Blue Moon” is about finally finding a love and relationship that is very special, and that isn’t regular. The phrase “once in a blue moon”, means that something like this dosen’t happen very often, or isn’t usual. In the chorus, Bebe questions “how I could live without you?” After she found this person, she wonders how could she give it up, after waiting so long. Rexha confirms with Rolling Stone, that she is in a relationship, most likely cinematographer Keyan Safyari.