Is it normal that i like reading gay or lesbian book/movies

hello, am 21 years old and i have never been in a serious relationship. Which is making me think that the reason for that, has to do with the fact that i enjoy reading gay or lesbian sex scenes in books. Or watching it in a movie. Which is making me think that maybe am a lesban or bi, even though i do have crushes on guys, and i have never had a crush on a girl except admire them. So please it it normal?