Q. There's this guy at work that I like. I think he likes me too, but I've always heard you shouldn't date people at work. What should I do?
A. Well, many people have met romantic partners at work, so it can work from time to time. Still, there are some very good reasons that common wisdom would tell you to avoid workplace romances. If your feelings aren't reciprocated, it can be awkward. It could even lead to litigation, especially if there is a power differential. Even if feelings are reciprocated, and you end up dating, it can be very difficult to get back to a cordial working relationship if things don't work out. You should also be aware that you will be opening yourself up to office gossip.
If none of that deters you, then you should check to see if your company has any rules (either explicit or implicit) about fraternization. Go out of your way to make sure it doesn't impact on your job or your job duties, and think again whether it wouldn't be easier all around to meet somebody outside of work.