Ah pain, my lonely friend.
At least, if it’s emotional pain. I’m not nearly as fond of physical pain.
It goes in it’s own sweet time. The thing is that you need to process it, emotionally. If you deny it or try to forget it, then you are only delaying the healing. The best thing to do, actually, is to go over it over and over, preferably with friends, if they are willing to do that. If not, then with a therapist, or a support group, or whoever you can find who will listen.
The talking about it slowly lets out your feelings and slowly diminishes the pain. But it takes time. No matter how you deal with it, it takes time. If it is about love, then, depending on how attached you were and how serious you were, it could take a long time.
I wish I had better news. We can’t control our emotions. We can only feel them and pay them more or less attention.
So I’m sorry you’re hurting. Feel free to tell us your story. It will help, and you’ll get a lot of good feedback (and some bad feedback). There are a lot of people here who care, and it makes a difference.
Welcome to fluther, and good luck.