Ally and I have been best friends ever since we met each other when I was four and she was two. To say we go way back is an understatement. We tell each other every one of our worries, every one of our fears, every one of our secrets. Ally was always an outgoing girl, while I, myself, have always been shy. An introvert paired with an extrovert. But then she moved. And she didn't come back.