Don't worry about OW and his relationship with her. Perhaps he does have to see if things will be good with her. One way to look at it is sometimes they need to spend a bit of time on the other side of the fence to realize it's just as green and full of weeds as the one they left. And the one they left is just not so bad... and that's where all the memories and their family is...
Try to enjoy having extra space and time away from your H. Use this time wisely as one for growth, self-exploration, healing, rediscovering yourself, etc... without the distraction of a husband. Look for those silver linings. They are there...
There is no arriving, ever. It is all a continual becoming.
