My dark side

I'm the type of person who gives not just second, not just third but perhaps more than a thousand chances. I'm too forgiving. But when my heart closes, it totally shuts down. There will no key to open it up again. My very soft heart will turn into the strongest of steel. It will take me heartache so unbearable, betrayal so unforgivable to turn my affection into a hatred that will go down as deep as the core of the earth. This is my dark side. A dark side that appeared only once yet, until this morning. I finally shut T down.