Depends.... are either of you married or involved with someone else?? Is either one of you in a supervisory position over the other? If not... is there a chance that one day one of you will be? Lots to think about.
It definitely could be. Before you commit to anything just imagine the scenario of how life would be like at work after a breakup. How close do you work together is important to consider and how much influence do they have in your growth w the company? Definitely think it through carefully.