[Vyse]

I can relate with a large amount of your post, as I have gone through a very similar "relationship." The solution is simple.

First, you already know she doesn't like you and never will love you like you love her. You're still gaga over her, though. There's one solution here: talk to her, tell her the vast extent of her feelings, and have her reject you, flat out. If she won't reject you like that, leave her an ultimatum -- if you don't respond or whatever, we can't ever see each other again because seeing will pain me all the time. Whatever, do what you have to do -- the point is to get her to openly admit she has no feelings about you.

After that you can heal. It will take a while, and even years after, you will still hurt every now and then with the memory of her, but you will be able to move on. You have to move on. You can accept your failure and live your life. Don't be a coward and forever chase what you cannot have.