You are exhausted from crying - not only because of the break up, but because no matter how you try, your ex just refuses to talk to you.
Your text messages and emails go unanswered, and the countless calls you have made to him are totally ignored.
This is driving you insane - how can you get your ex boyfriend back if he won't talk to you? It's understandable that you are so desperate right now - you are depressed and miserable and your emotions are extremely fragile.
This is causing you to do irrational things in your attempts to get your ex boyfriend back, and the more you fail to do so, the more devastated you become.
First of all, you HAVE to stop trying to make contact with your ex right now! It might be driving you crazy that he will not speak to you, but try to understand that your persistence is driving him just as insane.
What you are in fact doing is making him angrier with you and there is a possibility of you ruining any chance you have to get your ex boyfriend back.
Take some excellent advice and leave your ex entirely alone for now.
He is hurt and angry as well and needs some time to heal his wounds and get his own emotions back on track.
It is impossible for him to do this if you are constantly calling and texting him.
Give yourself some time as well to simmer down and start feeling better.
Let him get over the break up in his own way, and you do the same - whether it's with your family and friends, at the gym, or simply walking the dog.
If you happen to bump into him at some point, greet him with a smile, chat a bit, and then go on your way.
This is enough to make him think about the time you were together and the good times you had.
Sooner or later he is going to start missing having you around and, because you haven't been hounding him all the time, will more than likely give you a call.
Until this happens though, just have patience - let him do things in his own time, and there is a good chance that you'll get your ex boyfriend back.