Go ahead and steal her. It's a dog-eat-dog-world. Just make sure you have the muscles and the martial arts skills to fight the other dude when he comes to beat the honeysuckle out of you.
Remember, if you weren't stealing other guys' girlfriends, then they'd be stealing them from you.
However, BECAUSE this is a workplace scenario, you might wanna just fresia the whole thing. Women act on instincts, and change their emotions in a heartbeat. Maybe she puts out Monday, and maybe she hates you Tuesday. In the workplace there are SERIOUS sexual harassment laws that you shouldn't break, and if you fresia this honeysuckle up, and the girl who "likes" you today decides she doesn't like you tomorrow, you will get an asskicking from the boyfriend, and also get called a stalker at work by this girl, which could potentially lead to a sexual harassment charge and you losing your job.
Don't honeysuckle where you eat, aka don't try to bone co-workers. Even the roughest, toughest PUAs I know advise against this.