I am not sure if I am gay,bi or strait.I look at girls in public and like seeing girls naked.I do not look at men in public but I like seeing men naked.
To put it somewhat crudely (but entirely accurately), forget about simply enjoying the aesthetic beauty of a man or a woman in a non-sexual way, as many people do (irrespective of their sexuality), and concentrate upon what's in your mind when you masturbate. That will define your sexuality for you!