I stumbled across this article about platonic work flirting and found it amusing because I think it applies to our law school more than most work environments. It's definitely worth a read. From the article, "23 percent said they had a 'work husband' or a 'work wife.'"
Here's the moral of the story:
Is your "work marriage" crossing the line?
• Would you behave the same way if your romantic partner were standing next to you?
• Are your flirtations consistent with the way you normally behave?
• Are you thinking about your "work spouse" while not at work?
• Do you compare your "work spouse" to your real romantic partner?
If so, you have a problem. [Sorry, no toll-free hotline number included for help.]