Keep dreaming of having relations with dead celebrities?

Really not sure what is happening but I keep dream of having ual relations with dead actors, they are alive in the dream obviously. Yesterday it was Kennith Williams, it was disturbing and I even said to some one in the dream "I thought he was gay". He was forceful and he had semen all over him. I dream elvis and he got his private part out for me to play with, the room was large and white and there was other people there, it kind of looked like an orgie party. I have dreamed my dead cusin and Thin Lizzy but not ual. The most strage one was the actor Mike Read, I think of him as a father figure he use to do children programmes when I was little so I never ever though of him as ual before, then one day they announced on the news that he died, I don't think he even cold yet but he was in my dream having ual relashions with me. At first I found it kind of normal but since the Kenneth dream I don't want to dream of any more dead people. Does anyone know how to stop this and why it's occuring.