Zues, it's not sour grapes. Its a better perspective on exactly who I was M to.
My former boss is a recovering alcoholic. I knew he drank but was unaware of the extent of the problem. After all, I was not his wife nor his mother. Then there was a particular event after which people started coming out of the woodwork and telling me stories. When I pieced it all together, when I finally saw the bigger picture, I immediately went to the correct person to get him into rehab.
If I was happily M and found out about the emails I could have worked through it. But I found out about them after he cheated, lied, and walked out. After years of being told I wasn't attractive enough, wasn't good enough. I'm not celebrating at all, I'm just viewing from a different perspective. I'm seeing the bigger picture.