Rose,
I've done the same with at least one of my exA's. I was able to let him know that I will always care for him and hate his disease. I didn't invite him back into my life, in fact he knows for sure now that he's not ever going to be a part of my life again. It was good to have that closure. And I have not told very many people about it, because they wouldn't understand.
Isn't it great that we have a place like this full of loving friends who totally "get it" ?