heavy crush (on) , an intense or sudden romantic infatuation, often short-lived, towards another person who, often, is unaware of it or does not respond to it; a one-sided infatuation. See love for synonyms.
(2) Nathaniel Mayweather (Charles Elliott) and Trina (Melora Walters) in Cabin Boy (1994):
-- Nay: ' Did I mention I have an incredible crush on you? '
-- Trina: ' That's wonderful. I'm always flattered when a psychotic becomes smitten with me.'
2. The object of such an infatuation.