Despite his deep attraction to Taylor, at first Clift couldn't bring himself to tell her he was gay, the author of Elizabeth and Monty: The Untold Story of Their Intimate Friendship tells PEOPLE ...

BLADE NEWS SERVICES In this 1957 file photo, Elizabeth Taylor poses with Montgomery Clift for the film "Raintree County." BLADE NEWS SERVICES In a 1944 file photo, young actress Elizabeth Taylor ...