look up any word, like bukkake:
A person that is not easily obtained. Either too beautiful or too popular to get their attention.

Someone that knows their self worth and is not easily wooed or fooled into a date or other interaction.

A celebrity or high level executive would also be an example of a hard get.
"Ellen has so much going for her, she sure is a hard get"
by JimmyJamez March 16, 2010