The essence of forgiveness is to love those who have not loved us. Yet, I cannot at this point feel love for the one who hurt me. Does this mean that I am not forgiving?
From the Aristotelian philosophical perspective, there is a difference between what forgiveness is at its core (in its Essence) and how we as imperfect people actually practice forgiving (what Aristotle calls the Existence of forgiving). We do not have to reach perfection in our Existence of forgiving. In fact, Aristotle comforts us by saying that is it is very difficult to reach the exact Essence of the moral virtues because we are constantly growing in these virtues as we practice them. So, if you do not feel love for the one who hurt you, this does not mean that you are not forgiving as long as you are motivated to reduce your resentment toward the person and to offer goodness of some kind (such as civility) to the other. As you practice forgiving, over and over, you may grow in the moral virtue of agape love (which is love in the service of the other even when it is difficult and painful to do) toward the person.