My question is simple:
I had this girlfriend right, she was the greatest part of my life and I loved her more than anything and still do. She was unhappy in the end of our relationship and left, it was only a year and a half long but she was my life for that whole period and now I don't know how to go on. I find no joy in the things I used to and all my friends are getting fed up with me and I just need some solid advice to run with. Can anyone help me??

I think you need to take it slow and accept what has happened for starters. I know it is easy to tell you to focus on other things to help you forget, however I found that healing takes place best when you can deal with the grieving process.