I know that is hard. Good for you for just walking out. I am afraid that I wouldn't have been able to do the same.
I think the night I found out my H was living with OW was the worst night of my life. I am sorry you are going through this. It does get better, but it takes time.
I will say that I think H and OW living together was bad for their R and just made it end that much quicker.
