Stay by David Guetta is an emotional narrative that delves deep into themes of love, longing, and the desire to hold onto a cherished relationship. The song speaks to the emotional turmoil of wanting someone to stay despite the difficulties that may arise. Key themes in the song include the struggle to maintain a relationship, the pain of potential separation, and the hope for reconciliation. Poignant moments in the song are when the singer expresses vulnerability and pleads for the beloved to stay, highlighting the intensity of their emotional connection and the fear of losing what they have.