So I followed my coach's advice. Sent WH my apology letter. Made sure there was nothing but validation for him in there and asked for forgiveness. I don't get a response from him. Which i suspected. But I continue to treat him as a friend and drop all R talk. I don't question him. Every interaction I have with him is nice and light and friendly. Today is the second day since I sent the forgiveness letter. He is nicer and lighter. Even playfully swatting me with paper. I'm not looking into any of the behavior change as anything. I'm staying my course. But it's nice to not have that anger edge coming from both of us.