Look sweetheart, you are young and curious. Everyone has had a homosexual thought one or more time in their life, it's normal to have thoughts. With all of the images and openness about homosexuality, it's no wonder that many, many, many people have these thoughts. This does not mean you have an obsession. It may mean that with everything that you see and hear, you want to be sure that you are clear about your feelings about the same sex. I am a heterosexual woman. I've never been with a woman but I can say that some strange thoughts have crossed my mind. Hell, I used to think that I was possible born male when me cycle (female thing) didn't start when all of my friends did. But, I am now a mother so that was just a thought. As a teenager, Especially, we are trying to find our niche in life. Psychiatrists and medication are only there when it becomes unbearable and affects every aspect of your life. It seem to me that you are not gay but, if somewhere down the road, you find that you are gay, then embrace who you are, if not, then embrace that too!!! Either way you'll know that you are who you were meant to be. Don't worry. If you are not aroused then these are just thoughts that you have of things that you don' t want to happen. You can not control WHEN your mind thinks of certain things, but you can control how you act on those thoughts.
Talk to your parents or any adults who are around you that have an OPEN mind.
Relax, you are not alone!! :-)
I hope to have been of some help.
You need to consider psychotherapy when you're having thoughts like this. That is the only thing I know that can help you sort this out in your mind. Having these thoughts does not mean that you are homosexual but it does mean that you have an obsession of some kind. You would best be served to see a psychiatrist who can talk to you and give you medication.