Look, I know I don't know you, and you don't know me. But we share one thing. The loss of a g/f that you thought you loved. I had the same thing(almost, she ended up getting engajed to some guy who is treating her like sh*t)
But one thing that you always have to remember, is that love is not what makes like so great.
Now, true that love does make things much happier. The way I got over my ex was sink my self into something else that meant a lot to me. I consumed my self with freinds and my old car. It helped, and time did pass a lot faster. And before i knew it, I was over her. Not saying that i never think about her. I still think about her. And i thank her for allowing me to feel things that i had never felt before.
But like a lot of the others have said a;ready, just give it time.
Get a hobby that will consume most of your life.
That's my two sense.