I read this last night before I went to sleep, so I decided to wait until morning before reviewing it just to make some sence. I loved the chance encounter of the guys.
Billy must have lived a rutined life with pleasantries and some happy moments, but I don't think he had been trully happy before Nate. Nate with his child like behaviour opened his eyes. I love how Bill observed people at the subway. I do that too, so much fun.
The idea of having just one day in a whole lifetime with someone you know would make you a better person, a happier person, loved and everything, is so interesting and I was very excited from the start.
At the end, the tiny info about Nate becoming a dad was subtle left out hanging. It could be either a prize or a hinder later in their relationship. I loved the endin, it was just perfect for this story!
:)