Olive, I have had the cheating dreams too. I even had one about an EA and the woman's name was Charlotte. When I asked my H about it he told me used to work with a woman named Charlotte!!! I had never heard her name before, so that was REALLY WERID. Fortunately it was only an EA in the dream so I wasn't angry with my husband... as if I'm going to get mad at him about my DREAMS of him cheating!!!
But I know how sad they can make you feel. I agree with Sophie that the dreams are our way of going through the feelings and dealing with it. I think they are probably part of the healing process we need to go through.
There is no arriving, ever. It is all a continual becoming.