The song "Stay Sweet" by Piney Gir is about the regret and longing for a past relationship. The lyrics express the pain of losing someone and the recognition that the relationship is truly over. The song reflects on the memories and lessons learned from the past love, while also acknowledging that it's not possible to go back to being friends without rekindling old emotions. The singer expresses gratitude for the good times and trinkets received, but also acknowledges the bitterness and hurt caused by the breakup. Overall, "Stay Sweet" is a raw and emotional reflection on the complexities of love and loss.