An actor usually plays a fictional character, of course actor is the meaning of this right word!
Do you know any lesbians, bisexual or gay actor/actress? I don't know any of them, except the late Rod Hudson as it is?
Some actress/actors pretend to be a smoker just for the movies, because the Tobacco will pay them million of money if they light a cig!!
Famous people in music business, like Madonna kiss another lady (I think Britany Spears) at music concert once, and Janet Jackson show us her metal nipple, Eltron Johns is gay singer and so is Boy George, they are more real and natural than actors!!