I would seriously go to C for the both of you. This will show you how serious he is about staying with you. If I were you, I would also say that this is a good time for you to stay scarce. Since he's had so many affairs, his paranoia about you having one will be at an all time high. This is what's going to be the catalyst to get him to stay.
I now you want things to go quickly but it doesn't work that way in long term relationships. There are issues he has that took years to build up. They can't switch overnight.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.