Heather, As long as it's helping YOU to sort out what has been troubling you for a long time, and how his behavior fed your insecurities, then it's not a problem. The same would apply to your parents situation as well.
Yes, you are most definitely looking at your situation very honestly and hopefully this time next year, you'll be able to finally find some inner peace.
Just be careful that you don't get stuck in one spot and don't move forward because you are afraid to do so.
