You're All I Have by Snow Patrol is a heartfelt rock ballad that delves into themes of love, dependency, and emotional vulnerability. The song captures the intense emotions that come with being in a deep, meaningful relationship, where the person you love is the cornerstone of your existence. Key themes include the reliance on a partner for emotional stability and the fear of loss. Poignant moments in the song arise as the lyrics reflect the raw, honest confession of needing someone unconditionally. Snow Patrol effectively uses evocative imagery and emotive melodies to underscore the depth of these sentiments.