MCC, I'm sorry you are here, but welcome. You will meet some awesome people on this board who will give wonderful advice. Please listen to them, they are very wise.
Your W is very mixed up right now. She feels like something is missing in her life and she thinks "he" is the missing link.
Let's back up and look at this situation. It appears that they have never even met in person, so how in the world can they be "soul mates"? I think the best thing to do is back up and give her space. Go dark on her and do 180's and GAL. More or less, live parallel lives. I think they will realize real quickly this won't work. How far away does the OM live from your wife?
As far as trying to make her quit playing the game, don't waste your time. It's the Romeo/Juliet syndrome, by trying to pull them apart you push them together. Right now don't try to control or change her, it's impossible. Just work on making yourself Mr. Right not only for her, but your ownself.
As far as friends and family go, they mean well, but they can't understand what you are going through. They all think they know what they would do if something like this happened to them, but until it does, they have no idea. The one key thing to remember is that they still have their family intact. You have the right to fight to keep your family intact. Only you can decide when you don't want to fight anymore.
Yoyo
Life's challenges are not supposed to paralyze you, they're supposed to help you discover who you are. -- Bernice Johnson Reagon