I'm so sorry to hear about your terrible experience Mick, but hopefully you will be able to find someone new, if that's what you want.
You certainly couldn't be blamed for being cynical now.
I think after 5 years you can divorce the other person without any involvement from them.
Try to put it behind you and concentrate on what is good and positive in your life, then you can open a new and hopefully happier chapter.
I think you're a brave man for putting this in front of us all, and for that you have my admiration and respect.
Best of luck mate