This is hard to lose your loved ones, but all of us got through this and now it is time to chose the way whether to go back to him again or to start new life.
My advice is as follows - if you do love him and cannot imagine your life without him, then set up a goal and follow it not matter what, BUT I said SET up a goal and not to fall into his knees begging to come back lost relationships. Act but having your mind. One Scheming once said: try to catch him on jealousy and must come back if he loves you, if not then you will not even hear about him or he is so strong willed person that even the thought of your independence could touch you so in this case you should explain everything to him and tell about your intentions, but very calm, being honest with yourself, first of all, till the last drop (THIS IS A VERY IMPORTANT CONDITION, you will understand why in time), and if he rejects - you will have to start a new life. To start, even from your knees.
As to the action. I will give you a piece of life advice. If it is true love, holly loves with all the consequences- you must FIGHT! Fight to the end, never give up, fight and bear everything but cheating and dirty tricks and if he left you for the sake of another woman, cheated on you, wiped boots on you - forget about him and better FORGIVE him and forget about everything! It will be easier for you and this is how you can make him feel hurt.
This poem can help to understand the last lines.
From broken hearts,
That have not yet healed,
And visible scars,
Portray the patterns.
Here we go to the second piece of advice. You must find power if you see you cannot return your love. Anything is good here. Use any tricks you know.
You have to change your life scenery, hobbies and your life style - all that will be very helpful. But it will help only at the beginning. Later on everything will go back to its places and you will feel a little bit awkward for your “childish” behavior. But this is life. We go through different stages and we cannot control our emotions.
Alcohol does not heal at all, it makes you feel less pain but it brings harm to your health. Pain will stay and there are no things that can stop it. But the best medicine is time. Time heals everything.
You have to find someone to take you off this pit of sorrow. And if you find true love then you are saved from the trap of past relationships but if you cannot find true love, your new affection will bring more harm.
Look for TRUE LOVE at least in such situation.
It is almost impossible to avoid the cases when you face the how to get your ex back situation. The biggest mistake here is that people think too strong about how to get your ex back, instead of putting this whole situation in another way. This is not about how to get your ex back, really. It is about how to make it exciting again.