Researchers at the University of Wisconsin-Eau Claire investigated the popular question of whether men and women can be "just friends" and discovered that perhaps Harry is right all along:
Daily experience suggests that non-romantic friendships between males and females are not only possible, but common—men and women live, work, and play side-by-side, and generally seem to be able to avoid spontaneously sleeping together. However, the possibility remains that this apparently platonic coexistence is merely a façade, an elaborate dance covering up countless sexual impulses bubbling just beneath the surface.
New research suggests that there may be some truth to this possibility—that we may think we’re capable of being “just friends” with members of the opposite sex, but the opportunity (or perceived opportunity) for “romance” is often lurking just around the corner, waiting to pounce at the most inopportune moment.
This is what happens when researchers met opposite-sex friendship: Link | Research paper [PDF]
So what do you think Neatoramanauts?
My perception of what happened with your co-workers is that they always had feelings for you and you didn't noticed. Maybe they were too subtle when you were married, but the interest for you was always there.