yankel,
I feel your pain but like Guard said in the long run this is a blessing. I could tell you this first hand. I was caught EIGHT years ago. Unfortunately for me, six weeks after I was caught, I fell right back into it. I do not have the time to explain the whole story. If you are interested, you could read snippets of that story
here.
It is definitely possible to repair your relationship with your wife. When she recognizes your sincerity she will learn to respect you even more. She will also learn to understand you more.
A few pieces of advice:
1) As much as you could, show her how sincere you are. Remind her that you try very hard to break free from this addiction.
2) Explain to her that temptations from women is normal for all men. This has nothing to do with HER. This is about YOUR problems. She should not feel the need to take blame for this. She is not lacking anything that you need.
3) You mentioned that you showed her GYE. Show her personal stories of people on this site that are "normal" just like you. This will ease the pain a bit knowing that it can happen to anyone and is happening to MANY frum yidden in the world. (Unfortunately for me, my therapist never told me or my wife that this sort of stuff happens. He himself may not have known. So as far as both me and my wife were concerned, I was the only one in this world with this problem. It was not until years later when it became more public knowledge, was my wife able to understand me more.)
4) Have her speak to a therapist. She needs to hear from a professional outsider that your addiction is not her fault.
5) The two of you should see a therapist together to help your marriage. The more you can maximize,the better. Just beware. When going to a therapist, stay focused. There are three separate issues that need to be resolved, but yet depend on each other: a. Your addiction b. Your wife's feelings c. Your marriage. When the issues are not focused, you may come out frustrated. If you read my post I describe this in a letter I wrotye to my therapist many years after seeing him.
6) And of course, make you show her extra love.
I wish you and your wife the best of luck.