I think about sex alot, am I bad or just normal?

Of course it is noraml, because everyone must have such desire, but often they don't express their feeling.
I am glad to read your post that actually you are very kind to voice out your opinion appropiately. Do enjoy your desire~

want to be friend?

You are not too bad! Sexual contact which is a normal thing for human,including you and me,as you are no boyfriend that you don't know what is a sexual.So you should be found a boy friend that you will be felt happness in you life.