Attracted to my friend?

Hi, im in highschool and I don't consider myself gay but i do find men attractive more then women but I had this dream the other day about me and my friend "fooling around" He is attractive to me but he is straight and has never considered himself gay, I think. We have been friends for a very long time and ever since that dream I've been going crazy about it. Everywhere I go, i reinvent the dream in my head. In the dream it felt so real, it could of been one of the best dreams i have ever had. Can anyone tell me what to do?