Om Swami
How do I know if I have truly forgiven someone who hurt me?
Forgiveness is a wound healing
Forgiveness works like a wound: it is impossible to forgive wholeheartedly until the wound has healed, and some people's wounds take longer to heal. When a wound has healed, you will forget to ask whether you have forgiven.
He asked his guru how he would know he had forgiven someone. The guru said, "You will forget to ask." Imagine an old injury that has now healed.