I still love her after 6 years

I cannot get over this girl. I met her in year 7 (she is year above) and have loved her ever since I think about her everyday without fail. I don’t know what to do about it I think she only “loved” me because she was lonely I cannot put into words how much I love her I am obsessed, everything I do reminds me of her I don’t deserve to even think about her no one does. She is perfect in every way she is funny one of the sweetest people I have ever known and so so forgiving. I have never met anyone I have loved as much as I love her I struggle putting my emotions into words so this is so difficult for me but I cannot keep quiet anymore. We went out twice so by rule of thumb it won’t work out no ma
Yet how much I wish for it too. But yet I feel so used I was her entertainment she built me up just Knock me down. I both live and hate her for this. I have loved her for 6 years and as much as I don’t want to I will for the rest of my life. Please does anyone have anything I could even just try? I don’t have the heart to tell her nor block her/ remove her from my life.