Sorry to hear that man. what im about to say may or may not help you.
My gf of 3~4 years left me 15 months ago. for months afterwards i felt blinding, numbing pain. i lived day to day. I moved to a new state almost immediately and started my life again. the first 6 months were very painful, but the good thing is you start appreciating the small, beautiful moments in life. you start to appreciate an afternoon where you just feel "alright" as a very good day. healing feels good. currently in a bout of depression over my ex, not gonna lie, im not even close to over her, but you dont have to be to just feel alright. the waves of sadness and grief get briefer and easier as time goes on. Feel the pain, allow it to change you and allow yourself to grow from it. Best of luck mate, You'll be a better you by the time this is all passed.