I've had an affair with an LDS woman that I stopped recently here, where I live. She's well respected and works in our local school system but they were married very young due to her turbulent background and her husband is non-LDS and a former Navy diver and now that he's home all the time these past years they're facing reality.
I stopped probably for the same reason your husband did.
I admit this because we are all human beings. Nobody can tell you what it's like because only you know the detailed dynamics involved between you and your husband because that's where god exists for you both. There isn't a book out there that will help. I can only say this from experience...if he hasn't left...or you haven't left...then that's a very good sign. From here on out have open communication until it hurts (leave nothing inside)...get a marriage counselor if you can't do that (non-negotiable)...and endure day to day until the trust is re-built.
There is no silver bullet and you aren't alone.
