when a person has a crush on someone of a different sexual orientation. i.e. when a straight girl has a crush on a gay man. very similar to girl crush and boy crush.
She has a gay crush on that guy.
by s-a-to tha-r-a February 18, 2006
A person has a crush on someone of their sex. A person can have a gay crush and still be considered straight.
Billy *likes* his English teacher Mr. Johnson. He has a gay crush on him.
by Papa John's Gas March 21, 2006