I've seen it too many times in Hollywood. Talking about a relationship in public can jinx it. And if you have your picture taken together, you might as well start packing your bags.
Neither does man have gills for living in a water environment; yet it is not sinful to explore the depths of the oceans in search of food or other blessings.
Fundamentally I feel that there is as much difference between the stage and the films as between a piano and a violin. Normally you can't become a virtuoso in both.