I just got caught up on your sitch. I know where you are at, I was there. It is extremely hard not to backslide here, but it is important you don't. I believe that your W is still involved with OM.
When she moves out it will be easier to go dark. You will need to GAL then to keep your mind busy. I found Meetup.com helped me find things to do. It will be hard, so you need to be ready for it. The fact that she talks positively about you is good, it means there are things that she will miss when you are not around. It will take a while for that to sink in.
You do not have children, so I don't know how often you will see each other. But when you do it is important to look your absolute best no matter what you are doing. My W just commented on how good I always looked when we were seperated last night (she said I looked "hot" ). You should be doing this now, but it easier to do it when you are seperated.
Hang in there. I do see hope in your sitch (I see a lot of similiarities with mine).