Yeah, honestly I'm in the exact same boat. I never knew how much love could mean to me before I met her, and frankly, it meant everything to me. We have been together for over 3 years with one breakup, the last one being the second, and final. It has been 158 days since.
I still keep writing her poems when I can't sleep, and sadly, she'll never read them.
I could not begin to describe with words what her existence in my world meant to me, I lived every day for her, I did all the little things to make her smile, she gave me motivation and hope in this dreadful world. With her by my side I really wanted to do something with myself, to build a future for her. She was the sole person to made me genuinely smile in this world, and by being with her, and making her happy, I sometimes felt like being born wasn't so meaningless after all. Seeing her smile or hearing her laugh was enough to make my day so much brighter.
Not all fairy tales have a happy ending though, I still struggled with depression and being suicidal sometimes, I must have made her so worried and sad, I keep regretting it every waking moment of every day. I cannot possibly live with losing such a treasure.
No offense meant to anyone, but in my eyes she was the best girl in every aspect, everyone simply pales in comparison, she had a certain vibe that I've never seen in anyone before. I do not really bother to look at anyone else, and never did. All I could ever see was her. Simply put, I just can't go on, or rather don't want to, without her. Sorry for the rather long post.