Sometimes you just have to put the past behind you. You need to fogive him for his failings. And you need to forgive yourself for your failings. And then you just leave the baggage behind. I don't believe that telling each other your secrets will improve your relationship. I think if you can concoct a scaled down version of your wrongdoing, and admit to that, get forgiven and move on, that is for the best.
Garbage is garbage. Don't drag it around with you, and don't go sifting through it looking for hidden meanings. Get rid of it. If you need to go confess to a priest, then do that. But confessing to your husband will not help you or him in any way.
