I used to think that loving someone is easy, like you fall in love with him and that its, the loves continue.. but its not. The process of being in love is really hard and complicated. You have to deal with jelousy, understanding, argument, lies, truth, heartbroken, reality and a lot of communication.
The truth is the hardest part of being in love is breaking up. Its not really easy as it thought. What I believe is the cure of breakup is find another person so that you can forget your ex's and so you can't really feel and think of the past pain from your past relation. But, that doesn't seem to work sometimes. Even if you are in a new relationship and your mind and heart still belong to the past one, you still can't be happy in your new relation.
Well, all you can do is give sometime to yourself. Time is the cure. Find something in your present partner, the good thing in their self for example like "they won't hurt you like the one before " kind a thing. And hold on to that.
But, if he going to hurt you too. Don't worry girls.. there still a lot of men outhere which you can find or found that will not hurt you they way the other did.