The song "Soul On Fire" by Beth Hart & Joe Bonamassa is about finding true love and realizing that it is the only thing that truly makes one's soul feel alive and on fire. The lyrics describe the singer's past experiences playing "the love game" with various men but never truly feeling fulfilled until meeting their current partner. The singer acknowledges their past mistakes and careless behavior in relationships, but now they have found their true love and are ready to leave behind their previous experiences. The chorus emphasizes the passion and excitement that their current relationship brings, and how it has truly ignited their soul and brought them happiness. Overall, the song is a celebration of finding love and recognizing its transformative power. It encourages listeners to embrace their own passions and to seek out relationships that make them feel truly alive.