Meaning of "Friendly Fire" by Sean Lennon

"Friendly Fire" delves deep into themes of betrayal and secrets within a failing relationship, possibly a friendship or romantic partnership. The metaphor of launching an assault with cannonballs represents the hurtful actions taken by one person against the other, even though they were close allies before. The mention of shadows that never leave and knowing someone better than anyone else alludes to deep connections and shared histories that are now tainted by the betrayal. The song also touches upon feelings of being lost, drowning, and desertion, highlighting the emotional turmoil caused by the aftermath of a damaged relationship. Overall, the lyrics speak to the pain of being hurt by someone you once trusted and the inevitable end of a once-close connection.