How long can you keep loving someone without them loving you back :>

I have liked this girl for over an year now. It is nothing mutual just a normal one sided crush and she also knows about this feelings I have for her. We have never acknowledged this elephant directly but continue to be friends meet occasionally, but even though after over an year of sadness, sobbing and punching walls in frustrations I can't seem to move past her.

My social life is not dead and I have had girls approach me and I have also felt infatuated to towards other girls but it wasn't the same as this. It did not feel a single bit pure as I feel for her. I question myself whether I like her or I am just very fascinated by the concept of being with her that I can not move past.

To describe her is to do a backflip from moon to earth, simply impossible. She is so pure and tender to look at and she is funny too. She likes her own company and is fun to be around. She is everything a guy would wish for and I am just me. So I somewhat have realized that there will never be anything but my heart still yearns for like the forest years the river to flow through it.

Maybe I do not actually like her and only am attracted to the idea of her as she is so perfect and I am just waiting for someone else to fill her shoes that she never ended up wearing. She comes in waves, I sometimes get busy with life and stop thinking about her and maybe others girls also get on my mind more than her, I think I moved past this phase of mine but then 1 thing reminds me of her and puts me in a slumber of sadness again. It is the sad fact that she is not in my life and she might not be with me in this life time which is a hard truth to swallow and that is what I can't move past.

What I have for her is a feeling I can't put to words and I am no writer but even a writer with greater vocabulary than me would stumble on how to describe or put her to words. Acceptance will come, it'll take time but it surely will come because it has to. One day I'd have moved past all this happily with someone else at that moment I'll think of these moments, her as nothing but a bittersweet nostalgia that made me the way I today, until that day comes all I have is cold nights with memories of her that I will not get to experience again.