GQ on the "Office wife" phenomenon

GQ magazine has an article about "office wives". This isn't a lurid sex on the photocopier type thing though, it's about the platoic male-female relationships that grow when you work closely with someone. You develop a shared history, shorthand, common references. I know the phenomenon well, as I can identify several occasions when I've had that kind of relationship with someone I work with. What's cool about it is that most times, you rarely see each other socially (outside the office), but they do end up knowing more about you than most anyone.