"Crush'n" by Jesse McCartney is a song about having a strong infatuation or crush on someone. The lyrics depict the overwhelming feelings of being in love and not being able to control the emotions. The song expresses the confusion and uncertainty about whether to express these feelings to the person they are crushing on. The chorus emphasizes the sweetness of the person's kisses and the desire to be close to them. The lyrics also suggest a willingness to do anything to be with the person, even begging on one's knees. The line "And if you were mine, I'd never let you go" shows the longing for a relationship with the person they are crushing on. The song talks about being hooked on the person's love and feeling addicted to their affection. The lyrics convey the idea that the person is unable to resist the charms and allure of the crush, leading to a state of confusion and insanity. It highlights the intense need to be with the person and the difficulty in getting enough of their love. Overall, "Crush'n" is a catchy and upbeat song that captures the excitement, confusion, and infatuation one can experience when developing a strong crush on someone.