My two cents about dating in the workplace. I met my current boyfriend of two years at work. And wow, it is great, we started slowly as friends and then realized that it was more. (someone earlier made that comment, I think, start slowly) We have a house, a dog and are talking marriage (kinda doing things backwards, but that is us

).
People can hurt you, but what you learn from that hurt and move on makes you stronger and will make your next relationship better. It did mine. It makes you appreciate and better ready for whatever comes next, if that makes sense. And that comes from someone that got screwed over from my ex-boyfriend.
Good luck, but I doubt you will need it. You seem to have a good head on your shoulders and will make the best decision for you.