The song "Ai Shang Ni" (爱上你) by By2 is a melancholic ballad about the pain of longing and the complexity of love. The lyrics speak to the universal experience of falling in love without reason and the difficulty of letting go. The singer expresses a deep longing for their beloved, admitting that they are afraid of waking up and not being able to hold their hand. The singer is trapped in their memories, unable to move on from the past relationship. They are searching for answers and reasons for the breakup, trying to make sense of their pain.

The lyrics are poignant and emotional, conveying a sense of sadness and longing. The singer's heart feels empty like a balloon without warmth, unable to move on from the past love. The chorus repeats the phrase "Ai Shang Ni" (爱上你), which means "love you" in Chinese. The singer reflects on how love doesn't need a reason, and how the pain of missing someone can be even stronger than the pain of losing them. The song ends with a note of hope, with the singer reassuring themselves that they will be able to move forward and live a good life.

Overall, "Ai Shang Ni" is a deeply emotional song that speaks to the universal experience of love and heartbreak. The lyrics are well-crafted and honest, conveying the complexity of human emotion.