We've met before, I don't write as much on your thread but I always read your posts.
I just wanted to tell you that there are more on these boards that would like to have done or do what you did/doing... Some even go ahead and do it.They just keep it to themselves. Which doesn't do it more wrong or right. I am afraid of the "void" I feel afterwards. It takes your thoughts away from him for a while but not your heart. It gets your hormones going but it just doesn't feel satisfying as much, maximum "second best" feeling.
Take a break, see what you can do to minimize the cost of telling your H, turn it around to your benefit if possible. Regroup, you are obviously distracted and you lost your focus for a while. Follow FG's thinking..., give it a try, not very many people jump up to the responsibility to guide you through troubled times. He takes the risk...