<human>: Can you provide a brief rundown of the text in within 3 sentences?

I work at a pretty big place (10,000+ people) that has many buildings and departments. I saw this one girl on match.com (she's not on it anymore) that I then recognized from work and have been desperately trying to figure out how to meet her. She works in a different department and different building and I can't figure out how I can bump into her to express my interest. None of my friends at work are familiar with people in that area and so I can't figure out how to contact her.

Unfortunately I may have missed my chance already because I have learned that she is seeing someone - that would explain her leaving match.com, but I have a major crush on this girl and I can't think or concentrate until I at least express my interest to her. But I have NO idea how to do it. There are probably a couple of cases where I could "accidentally" bump into her - if I walk the halls enough, but I'm not sure that is the best way to do it. At this point it seems like the only way to do it.

I'm trying to figure out if she's involved in any fitness activities at work - since she's into running, etc, so maybe I could see her at our gym, but without knowing her schedule that seems impossible too. I guess it couldn't hurt to be in the gym all day - at least I'd get in better shape.

I know this sounds stupid, and given that I'm 39 (she's 33), you'd think I'd have this stuff figured out by now, but I don't. Maybe I shouldn't even do it since she's seeing someone - but I'm already sad that I missed my chance once so I need to at least try one last time.
<bot>: So how do I "accidentally/on-purpose" meet this girl at work or how do I express my interest to her - without getting fired?