Another use of the term (also commonly described as a "crush"), can be used to describe the love or lust of a child or adolescent for an adult. For example, a student being attracted to his or her teacher could be considered puppy love. The term may meet with resistance from some people as patronizing and belittling of genuine emotion.
During Elizabethan times, it was known as calf love. A prominent example can be found in William Shakespeare's play Romeo and Juliet, in which a young man, Romeo Montague, is infatuated with a girl named Rosaline before finding true love with Juliet Capulet. In the second act, Romeo is chastised by his friend Friar Laurence, who claims his new love for Juliet illuminates the shallow nature of his feelings toward Rosaline:
Holy Saint Francis, what a change is here!
Is Rosaline, whom thou didst love so dear,
So soon forsaken? young men's love then lies
Not truly in their hearts, but in their eyes.