Im so in love with him... he says he wants me forever and i want him forever too. Do you think its true love?

There is a difference between love and infatuation. You are only 15. I remember thinking that I knew what love was then too, but now looking back, I know that it was not. What you are feeling is typical for a high school relationship, and that's okay. You need these experiences so one day, you can know that you really are in love. But I am sorry to say that you are in like, not love.