We do get hurt by someone badly. Even came to the point that we cannot forgive them. However, time do heal emotional wounds, that we even feel that we forgot about the pain caused against us.
Forgiving is not very easy. It means you need to forget about what's being done towards you. While others can say, they can forgive, but they cannot forget. But it is possible to forgive others if we are open.
Yes, we cannot forgive immediately but if we are open to it, we can eventually forgive others. We may not totally forget what's being done, but the pain attached to it will eventually heal.
Forgiving others has its good effects on us. It can make us happier because of letting go of the pain. It is even beneficial for our health. And of course, forgiving others is a way for us to be forgiven, either by God or other people.