We condemn the most in others that which we hate in ourselves. For it is our nature to be honest and judge oneself so harshly, so much so that your judgement passes onto the actions of others. It's never their deed that you despise, but the bitter taste of your own which rises like bile from your gut. And you can never forgive, never forget.
At some fundamental level, we are incapable of being with people like us.--
I'm a man, you're a woman. We're just too different.