I wouldn't surprise of Hollywood of both the old and today's were all either bisexual, gay, or just bi-curious.....I mean, the proof did lay in one of the greats like Brando, James Dean, Tellulah Bankhead, Marjorie Main, etc.
Even back then and right now, studios would keep the star's reputation to make them look immortal when in reality there were not. So everything must be hush hush and no one must find about one's sexuality. I think that is why the studios want to control the stars. To keep them under their grasp and do as they are told.
I mean, it took some time for other stars to speak out they are gay. Neil Patrick Harris, Rock Hudson, etc..