Let bygones be bygone...

... Life's too short for rancour and recrimination. Build bridges, don't burn them. Reach out the hand of reconciliation. Let loose the white dove of peace and tolerance. Be big-hearted and generous. And look a little more forgivingly at that person in the mirror, after all, there but for the grace of God goes you! 

Things happen from time to time, we have to learn from them and move on.