The song "Istina" by Sirky talks about the pain of heartbreak and betrayal. The lyrics convey a sense of longing and regret for a lost love. The singer reflects on their mistakes and the feeling of being abandoned by someone they deeply cared for. They express a sense of hopelessness and despair, as they struggle to move on from the past relationship. The chorus emphasizes the inability to sleep and the constant thoughts of the person they have lost. Overall, the song captures the raw emotions of heartbreak and the struggle to come to terms with the harsh truth of a failed relationship.