You could easily get your career ruined. All it takes is a woman to change her mind the next morning, or get miffed you don’t want a relationship. Not to mention it could get awkward because you’ll have to see that same person everyday. Besides, there are literally a million others outside of work.
Also office relationships have nothing to do with me-too stuff. You spend most of your time at work, chances are you meet your friends and partner at work. If you're worried about me-too you're putting yourself in creepy situations