This girl flirts with me but has a boyfriend?

[TemplarKnight]

This girl does the following:

Laughs at all my jokes
Twirls her hair
Smiles at me with bigger energy than she does everyone else
Stands very close to me when talking, basically touching arms or hips together
Always touches me when talking
Copies the lingo I use
Tells me personal things she doesn't tell other coworkers
Looks at me across the room a lot

The thing is, she has a boyfriend, but she hasn't told me that she does and often avoids the subject. Like if i asked her what she did on the weekend, she'll say "nothing, what about you" but will tell my other coworkers that she spent time with her boyfriend.

What's going on with this girl, why does she behave like this around me?

[Nikki1989]

Damn, dude, are you really 35?

[Summeroflove]

Distance yourself. Best answer. Don’t engage and be polite when dealing with her when you have to but don’t be over the top

[es20490446e]

The same way she behaves with you now, is how she will behave if you were her boyfriend.

[jahaims]

She is just an attention whore