There is no house in town in which inhabitants haven't felt what loss is (as a buddhistic monk has once put it in the book about living and dying).
Well, nothing happens without purpose and if there is a truth, it is that if you are not together anymore it just means that you haven't meant to be together.
Hard as it might sound, this statement is meant to alleviate those feelings crushing your heart now.
If he is better off without you, you shall be happy for the way he is going, and if you love him, you should think so even more. But the same is true for you, as the longer you stay with the person which is just not yours, the longer it takes for you to find the one you are supposed to be with.
I know that I can't make you smile now, but maybe I can draw your attention away just a little bit and maybe, you will be able to smile one day, looking back at what I would like you to feel and see right now.
Everything is going to change for you now, but in order to be born, the bird has to destroy the shall of the egg he used to live in.
Please smile for a second
Marc