The song "Daydreamin'" by Jessie J talks about the experience of being infatuated with someone and constantly daydreaming about a romantic relationship with them. The lyrics convey the desire for the person's love and attention, even though there may not be any indications or reciprocation from them. The song begins with the singer expressing a wish to stop herself from being consumed by these daydreams, but the feeling is too strong and undeniable. She refuses to believe that there's nothing between them and holds onto hope that one day the other person will care for her. The singer mentions the voices telling her to hold back and stop wearing her heart on her sleeve, suggesting that she is aware of the potential heartbreak or rejection that may come from pursuing this person. However, she remains relentless in her pursuit of their love and continues to push for it. The chorus talks about how she finds herself daydreaming about what she wants, emphasizing that it's all she has in terms of a romantic relationship with this person. She confesses that she doesn't want to know the reality of the situation because it may shatter her illusions. The second verse explores the singer's active imagination, which runs wild with possibilities of a relationship. She acknowledges that she needs to realize that her fantasies are not real, but she hopes that if the person is honest with her about their feelings, it won't hurt as much. The bridge highlights the blissful feeling the person gives her, even when she's fully awake. She feels like she's floating, unable to escape their influence on her emotions. In the end, the song repeats the chorus, emphasizing the singer's reliance on daydreaming about the person she desires. The repeated line "I don't wanna know, I don't wanna know" signifies her fear of facing the truth about their relationship and being hurt. Overall, "Daydreamin'" portrays the intense longing and hope that come with being infatuated with someone, and the reluctance to let go of these daydreams despite the lack of reciprocation.