In Engpsh, "puppy love" or "crush" are common terms used to describe a romantic attraction that is typically not very serious or long-lasting, especially one that occurs during adolescence. It is called "puppy love" because it is often associated with the kind of innocent, naive love that young people may have for each other, similar to how a puppy might show affection. A "crush" is a strong feepng of attraction or infatuation towards someone, but it is usually not a fully developed romantic relationship.