Is it normal to have gay experiences

The scariest thing that has ever happened to me occurred when i was 15. I was watching a movie, and a gay scene came up. There was no sex, just a guy touching another guys hand in a romantic jester. I was really turned on. Before this I never had a problem with it before, and so I was extremely uncomfortable. It has been two years, and i don't get turned on by guys, or gay porn. I don't have any same sex fantasies, but three more times i have had a sexual dream of two guys, but never me doing action. The dream just has two random guys,a nd it turns me on. I have the normal dreams of me and a girls, and I love lesbian porn. The the question is what happen when I was 15. It still makes my stomach sick.