The details of why we broke up are unimportant. I worked too much, she didn't work enough. I traveled too much, she was looking for white picket fences. There could be any number of reasons, and for weeks after we broke up, I often wondered why. Then one day, for no reason at all, it really didn't matter. I moved on, I became a different person. It wasn't until today, a chance meeting on the subway, that I learned just how different I had become.