Why does everyone do this to me? what shall i do now :(?

[Pink Freud]

You are emotionally bonded to him. This is natural, and most unfortunate, because people who have nothing in common can hook up and ignite this kind of emotional binding. It hurts. In time it does pass. What seems the worst is that you believed something about this other person that was not true. Now you feel inadequate, which is untrue, the problem with people who are disloyal is their problem. It certainly can effect others powerfully, but it really is their problem.
At the moment it is hard to understand why these things happen, it is hard to accept that things are going to get better, but they will.
there will come a day you will look back and be glad he is out of your life. This bind will fade and you will heal. It takes time, but there is no way to stop getting better with time.
You might at some point want to sit down and write out your experiences in these relationships that didn't work, and see what similarities they have. All men do not do the things your ex's have done. There is a similarity, you need to find what it is that attracts you to these kind of men and use that knowledge to pick someone different next time. I don't mean blonde or brunet, or biker or cowboy, there is something more subtle, that you are picking guys that have loose wires so to speak.

Life is an adventure, and when the truth is revealed to us we should be happy about it, but we are cultured to take it as a grievance, and breaking bonds hurts no matter how terrible the other person was.
There is a kind of chemistry that makes relationships work, but unfortunately it is clouded over in the beginning making it difficult to know if it is there or not.

This is not the end of the world, even though it feels like it, but it is a beginning of something new and this pain will fade away.

Hope you feel better soon. You deserve better, and you will find it.