Which begs the question: if you had been married at the time, would you have left your then-spouse for your current wife as a result of being so close at work?
Hypothetical, naturally. For many people who are in the wife's role of that question, that situation is all too real.
I have never been happier, but the point is that the platonic-ness of such close relationship can't be always safeguarded.
I mean it not in a negative affair-wise connotation, but still you can't help it. And what if some of the two is not actually single?