The song "Crush" by Bella Poarch and Lauv is about the excitement and nervousness that come with developing feelings for someone. The lyrics depict the feeling of being drawn to someone and enjoying their company, but also feeling hesitant to fully express those emotions for fear of messing things up. The song talks about the thrill of a new crush, the butterflies in the stomach, and the uncertainty of how the other person feels. It also touches on the idea of falling in love and questioning whether it's worth risking the friendship or connection that already exists. Overall, the song captures the emotions and complexities of experiencing a crush and navigating the beginnings of a potential relationship.