I am confused about my best friend?

I think you may have just built up emotions for her because of the amount of time you two have been close to each other. I have 2 best friends that I would give my life for and do anything for. One of them and I have been intimate with each other several times and enjoy each others bodies because of the love we share for each other in our friendship. Because she is a hetero, she may be feeling confused. Let her know that it's natural to feel an attraction to someone you are always around. She likes when you touch her and you like it when she touches you and both if you should act on it because you will never fulfill the desire if you don't. It will nag at you. There's no need to be confused and you don't need her as your gf, just your friend. Trust me, it's better that way.