I grew up and went to college in Wisconsin, then moved to California where I worked in a winery as a tour guide. During that time (about 4 years after I graduated), I was cleaning out my e-mail inbox and found some old messages from college friends which mentioned a girl called Katie, who was friends with my friends but whom I wasn't close to and had basically forgotten about. "Oh, yeah, Katie," I thought to myself. "Forgot about her."
A week later, Katie came in to the winery where I worked and went on my tour.