CC, I agree w/WR, sleep on it for a couple of days. If you decide to confront him, you need to be in a strong emotional state. When speaking to him, have your evidence in hand and look him in the eye while you are speaking to him in a very calm tone. This is business and you will need to wear your business hat.
Sit quietly, the answers will come.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
