loneliness

I live far away from where I grow up.  I moved here because I wanted a change, my best friend had moved here half a year before so I figured I would fallow him.  My girlfriend and I moved together and we all became roommates.  A couple years later my friend and I began to hate each other.  After I moved out we never spoke again (nor do I ever want to).  Since then I have made very few friends, only a couple of which I have gotten really close to. One moved away years ago the other will be moving away next week. 
She hates it here and has never been happy.  I want her to be where she is the most content, but I can't express how much I will miss her.  For the last year she has been my best friend, in that time my girlfriend and I have broken up and I feel so alone.  With her gone I feel like now I have no one felt.