There was a time when being a celebrity was a highly privileged position. Those in that category were treated like royalty and respected. They were under strict orders from the studios to exhibit and maintain morality, dress well and use proper language. They stood out for those very reasons. There was a mystique about them that made them compelling.
Yes, there were active kinky hijinks behind the cameras but they were carried out discreetly, not openly acknowledged or bragged about. In public they presented themselves well and were proper in their conduct.
There were far less problems for celebrities then than now. Of course there would be the occasional stalking problem or an obsessive fan that had become a troublesome issue, but that too was dealt with swiftly and without much publicity.
Rumors would crop up now and then, created and circulated by people who, by creating the rumor, implied that they were close to that star by having such personal information. The bizarre stories got the attention they craved.