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Related to calf love: puppy love
A mild, generally temporary crush, infatuation, or romantic attraction, especially that which is not expected to last or come to fruition. It's not uncommon for long-term medical patients to experience a bit of calf love for their nurses or doctors after a while. Ben always devotes himself to some new calf love that he can pour his adoration onto, but it never comes to anything serious.
A state of short-lived infatuation or romantic attraction among children or adolescents. Puppy love is starting to bloom among many of my fifth-graders.