An interesting situation, Zumbagirl.
I'm very much one for mending bridges, or at least attempting to throw a rope across the divide from time to time in the hope that someone might catch it. I can perfectly understand how you needed to take actions to protect yourself 20 years ago, but yes, some people do change and question their judgment, preconceptions and the like.
It's worth exploring a thaw in relations, and you are at least very able now to control the nature of any interaction so that it does not alter the peace and life you've managed to build for yourself over the intervening years.
We shall stay tuned, should you wish to update us.
Regards
Julia