Hi, Ruby. I'm sorry you had a painful past experience brought back to you by a careless individual. I'm probably not the best person to talk about breaking cycles of re-experience; I'm great at reliving past emotions, not so good at getting them to stop. But I did want to mention something that I find admirable in your post. Even in your anger, you're able to recognize that this person might be deserving of some concern, even though you're "should"-ing yourself about it, and you feel bad at the possibility of cutting him/her out of your life. Doesn't sound callous to me. You need to do what you have to do to protect yourself-- that's not callous. And as contradictory as it may sound, being able to have some level of concern for this person lessens his/her power over you and makes you stronger, and it's a big step beyond black/white thinking. I have a lot of respect for that.

Wishing you healing.