The song "If You Leave Me / Everybody Wants To Rule The World" by Niall Horan seems to explore the themes of love, vulnerability, and the fear of losing someone. The first verse describes meeting someone in a dream and feeling a strong connection, but then waking up to find them gone. The protagonist is left in a daze, longing for that person.

In the chorus, the singer expresses the fear of losing the person they love and the idea that such a loss would be devastating. They emphasize the impact it would have on their own identity, as they wouldn't know who they would be without this person.

The bridge of the song reveals the emotional turmoil experienced by the protagonist. They describe the pain of waking up without the person, going to sleep without them, and the foreignness of these feelings. They plea for the person to stay in their life forever.

The second verse continues to express the depth of the protagonist's feelings and how they don't want things to change. They want the person to stay close and promise to do so as well.

The inclusion of the song "Everybody Wants To Rule The World" by Tears for Fears towards the end adds an interesting layer of meaning. This iconic song explores the idea of power, control, and the desire for dominance. It might suggest that while the protagonist is afraid of losing their loved one, there is also an understanding that everyone has their own inner struggles and desires. It could be interpreted as a reminder that love and vulnerability can coexist with the complexities of power dynamics and the human condition.

Overall, "If You Leave Me / Everybody Wants To Rule The World" delves into the depths of love, the fear of loss, and the desire for stability and connection.