I totally empathize with your plea. To my knowledge, my H has only cheated on me once, but he is having a very tough time letting go of his OW, even when the PA is over. And it is only normal that you find yourself unable to trust in his commitment.
I have a suggestion to make, though, before you decide in a course to take. Have you done any research into why and how EAs happen? You may find that there are patterns in your marriage (if you want to continue it or any R for the future) that you want to change. I found quite useful a few books: "Not Just Friends" by Shirley Glass was the best, followed by "The Monogamy Myth" by Peggy Vaughn. And if you want to understand how much of an addiction an affair can be, read "Surviving an Affair" by Willard Harley and Jennifer Chalmers.
And vent here with us. That is why we are all here, to help ourselves by helping each other
So, yes I believe you two can heal and learn. But I also believe that there are times in which we have to bail out and learn to live again. And only you can know where you are in that respect.
LOL
"You don't throw a whole life away just 'cause it's banged up a little"
Tom Smith in "Seabiscuit"
