Blind Item #6 - Old Hollywood - Reader Blind

This deceased permanent A list Oscar winning/Oscar nominated actor had a voracious sexual appetite.  In his life, he was known for many affairs with actresses but in death his same sex relationships came to light.  In fact there were more of them than the heterosexual ones.  Three of the most interesting which were all from the same decade were with

1.) One of the most famous people of the day, leader of a national movement, and whose life was cut short.
2.) This temperamental talk show host who opened the door for others who hosted the same show but were more famous as they hosted the same show for much longer.
3.) This married into member of a political dynasty who started many government programs and once ran for a very high office.

Also he did not sleep with the most well-known religious figure of the day.  He met him while researching the role that won him the Oscar but he did sleep with several of his young male closeted aides.