Is it normal that i want to have sex with my friends?

I constantly feel like having sex with my friends. I have known most of them for around 5 years and we have all grown very close; I have dreams about screwing them, sometimes one by one, and other times all together. I dont really care whether it is a guy or a girl just as long as im the banger, the ring leader. Sometimes I think about having a role play with them, where they are dressed up as my slave or servant, and they do whatever i tell them to. I dont know if anyone else has ever had feelings this strong towards their friends, is it normal that I do?