The simple answer is no, of course not. However, if there is love, you can fight together to rebuild that trust and respect. It will need both of you pulling together and it won't be easy - much harder than if that trust was never lost - but possible. Imagine it as if your home has burnt to the ground and you have to start again creating a new home from the ashes. With this affair, he did after all come back to you, and stayed with you for the last 12 years (if I have my sums right). He has been tested, and although the outcome wasn't terribly elegant, he did end up stumbling out it the right way. With love, everything is possible.