I agree that a psychological eval would be beneficial for both of you. You will have to, if you want your insurance to pay for it, see a physician/counselor(?) to "suspect" a mental/emotional problem, who will then refer you out to a psychologist (that's how it worked for my son at least). I got a psych eval done for my son, and it helped me understand him more, and also helped me to know how I could help him. In the report, it will tell you what types of therapies would benefit you and your situation best.
As for the brutal honesty from @Just_A_Guy I think it may have been a bit too harsh. I don't think this thread should rile up @Mcmkk. I'm sure he can think up all the rationalities and negative thoughts/feelings against his wife on his own.
I do agree that she is using abusive behavior. As hurt as she is, as awful as she thinks your actions were, they could have been much, MUCH worse. Like I said, I have been on the receiving end of that confession by my husband, and I was hurt, but at the same time, my thoughts were revolved around his struggle and how I could help him through his temptations. There are a LOT of resources out there, many of them through the church, that can help both of you through this.
Additionally, it really isn't fair to the bishop to expect him to provide all your counseling. He is there for your spiritual health, he has no training in counseling, so when faced with emotional/marital issues, a professional is needed. If she's not comfortable going to just anyone, the church has counseling services, this allows you to freely talk about the problems in your marriage, without having to explain why it's a problem (since the rest of the world sees it as normal behavior).
Just remember, illnesses of the mind (I'll throw in marriage as well) are no different from other types of illnesses. If you were diagnosed with cancer, you wouldn't "deal with it" yourself, you would go to the professional that can give you your best shot at survival. The same goes for the "cancer" in your marriage. Also remember, cancer is never stagnant, it is either growing because of a lack of treatment, or dying because of treatment is being received. If it's left without improvement, it will get worse until it is far too out of control to fix.
I do wish the best for you, and I hope you can both get the help you need.