The song "Flashback" by Calvin Harris tells a story of a person who is reflecting on their past relationship and the struggles they face in realizing the importance of fighting for their love. The lyrics indicate a sense of regret and longing for a second chance. In the chorus, Calvin Harris acknowledges that he is now seeing things clearly and if he had the ability to change his mindset, he would make himself disappear. This implies that he is burdened by the realization that he may lose the love he receives from his partner if he continues to overlook its significance. The verse sung by Ayah portrays the situation as a flashback or a dream, encompassing all the memories and emotions associated with the relationship. It highlights the significance of these memories and how they can be encapsulated within one's mind. The repeated line, "Why can't I realize I'm fighting for my life?" emphasizes the internal struggle faced by Calvin Harris. He is questioning why he hasn't fully comprehended the importance of fighting for his relationship before it is too late. Overall, "Flashback" conveys a sense of longing, regret, and a desire to understand the significance of fighting for love. The song serves as a reminder to appreciate and cherish one's relationships before they slip away.