WASHINGTON — Former President Lyndon Johnson tried to seduce a famous political journalist.

Washington Star columnist Mary McGrory politely refused Johnson’s pitch for a liaison in summer 1964, Politico magazine reports.

McGrory thought a friend was pulling a prank when a Secret Service agent called her to say LBJ wanted to meet her at her apartment.

“Mary, I am crazy about you,” the married prez told McGrory, according to her friend, New York Times columnist Maureen Dowd.

McGrory told him she liked the job he was doing — but the admiration ended there.