Conversation was never begun at once, nor in a hurried manner. No one was quick with a question, no matter how important, and no one was pressed for an answer. A pause giving time for thought was the truly courteous way of beginning and conducting a conversation. Silence was meaningful with the Lakota, and their granting a space of silence to the speech-makers and their own moment of silence before talking was done in the practice of true politeness, listening, and regard for the rule, "thought comes before speech."
~ from NATIVE AMERICAN WISDOM by Luther Standing Bear
It is not "forgive and forget" as if nothing wrong had ever happened, but "forgive and go forward," building on the mistakes of the past and the energy generated by reconciliation to create a new future.