"Fingers Crossed" is a song by Billie Eilish that explores themes of hope, uncertainty, and survival. The lyrics depict a post-apocalyptic world where the protagonist and their loved one are the only survivors. They find comfort in each other's presence and the fact that they made it on their own. The chorus reveals a certain pessimism about the future, suggesting that even though everybody initially believes they will succeed, ultimately everyone faces their own struggles and uncertainties. The repetition of the line "they won't" emphasizes this skepticism, almost as if to say that people tend to underestimate the challenges they will face. The verses express concern for the loved one and a sense of longing for their reassurance. The protagonist is still alive, but their heart is "beating slow," indicating a feeling of emotional exhaustion. They ask their loved one if they are okay, suggesting that they have witnessed them struggling with their own demons as well. The word "infected" could be interpreted metaphorically, signifying emotional or mental distress. The song concludes with the repeated line, "The best of me, the best of me is you. The best of me, the best of me was you." This line suggests that the protagonist finds strength and solace in their loved one, as they bring out the best in each other. Overall, "Fingers Crossed" portrays a sense of hope amidst the uncertainty of a post-apocalyptic world. It highlights the importance of human connection and the endurance of love, even in the most challenging circumstances.