The poem describes the feelings of infatuation that the author has for someone. Whenever they see the person they are smitten with, their stomach fills with butterflies and they feel weak in the knees. Though they know they cannot act on their feelings, being around the person or even just hearing their name puts a smile on the author's face and helps them cope with problems. The author idolizes this person and their laugh is like music that helps the author forget their troubles.