Where is the place where you will do anything for the person you love and where you realize that it comes at too high a price? That what you are sacrificing may not even lead to the happiness you with for that person? When your anger and pain transform you into someone who is no longer able to give.
Something was broken three years ago. You can cover the break, try to make it heal. You can pretend it's not there and even hobble along. But it's there. And it never healed. And under what others see as smooth skin, you know the festering truth.