Most of my affairs have been with co-workers. It can work, but only if you have realistic expectations. Its side fun, not serious relationships and makes business trips a LOT more interesting. Focus on people that have as much to lose as you do if it becomes nasty. I also have a "thing" for Bosses (have had 3 and had affairs with 2, would be 3 but I didn't stay long enough at my first job) and Bosses don't want trouble at work, they want GOOD SEX.
It doesn't work for most people tho......they confuse sex with love and want more than can be had.
J (the bored at the airport wife)