is never productive. The only person it hurts is the one feeling the bitterness. The other person is usually unaffected by it, or doesn't care.

Yes, we probably all have those feelings and they can overwhelm you at times, but what is necessary is to learn how to let go with your heart and your mind, allow yourself to open up and let the healing begin. Once you do that, you are "free" of the one who hurt you. You are the only one that can allow the hurt to continue on a personal level. As long as you harbor that hurt inside you, you give that person the power to still hurt you. Most of the time, they aren't worth the effort and pain. So, do yourself a favor and let it go...live a more peaceful and sane life.