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.
... there is music even in the beauty,
and the silent note which Cupid strikes,
far sweeter than the sound of an instrument.
For there is music wherever there is a
harmony, order, or proportion: and thus far,
we may maintain the music of the spheres.