Hope you know I was kidding about the name thing. I do not own the copyright.
Anyway, your sitch is familiar, and quite similar to a lot of people here. In mine, I did not do anything that standing alone justified my W wanting to leave. Looking back, I can see that I wore her down with a lot of negativity (I wasn't happy with me for a while). I wasn't a bad husband. I did not cheat, I remebered all the right dates, I spent time with the kids. So, I understand your point.
As far as your W's friend, I am sure you are staying out of that. It is a positive that your W's friend is pro-M, especially if your W has not pushed her away. My W did push away friends who did not validate her decision to leave. In the end, though, your W will have to sort through her issues, and no one can do that for her.
The best thinkg you can do right now is act like a friend of hers. If you are like me, every fiber of your being will scream out that that is wrong. I', not saying walk around and kiss her a$$. Far from it. What I'm suggesting is that you keep making your changes (for you, not her), be consistent, and maintain a positive mental attitude (PMA). GAL'ing right now is very important. All of these things will make you feel better about you, which will make you more attractive to your W - understand that this is NOT the reason you are doing this. If you are doing this to win back your W, it WON'T work - you will not be able to maintain the work, and she will see right through it.
Come here to vent. You will be up and down. Unfortunately, this will take time. You will feel like time is your enemy, but I can assure you, it is your friend. A friend you may not want or even like, but an ally nonetheless.
Do not show any negative emotions around your W (boundary issues excepted). If you need to let out some emotion, do it away from her.
Just sit back, live your life as best you can, and watch. Make note of the little positive changes in your W.
One more thing. You may know this already, but DO NOT EVER tell your W about DR or DB. Those are for you and you alone. If she finds them, she will think your changes were nothing more than a ploy to trick her into staying.
