I would just take it very slow if you do decide to "put the moves" on this guy. Anything fast will potentially freak him out or cause drama at work....both of which are undesirable, clearly. You just need to be comfortable with the fact that if things don't work it WILL be awkward everyday and you will probably want to get a new job in that case (speaking from experience). But, like Kathy said, sometimes it can end in happiness too....so be aware of the risks but go for it!
