I love the fact that it starts from there, and you don't know where it's gonna go. Wait long enough - love will find you. Everything's a surprise. When you think you've got it all figured out... as Emerson said, the dice of God are always loaded.
I've seen novels that have grown out of one story in a collection. But it hasn't occurred to me to take any of those stories and build on them. They seem very finished for me, so I don't feel like going back and dredging them up.