Most Helpful Girl
I am in the same boat. It's hard to meet partners otherwise, but I use online dating to help.
I would never date a coworker because you can't stay away from the person if you have a nasty break up. One of you might feel tense or uncomfortable, and you won't work together at your best. Or, one of you might just hurt for a while, especially if the other moves on quickly, and that will have the same result.
Maybe you've never had a bad break up, but it could happen with any person. Sometimes human nature gets the best of one of you.