Sometimes you have no idea why someone did something that hurt or affected you somehow, and you just have to know the reason. You may never find out because they won't share that reason. I call this an open loop. It's how we become obsessed with certain thoughts that we can't get closure for. When this happens, life can seem to stop, and anxiety and depression have a higher chance of starting. It's time to close the door on old thought patterns that only do us harm.