<human>: Okay, this girl at my work (shit job we are both leaving soon) was crushing on me hardcore 8 weeks ago when I first met her. I didn't reciprocate, so she kind of lost interest and stopped giving me as much attention. Then, I changed my look (to become very good looking) and she started again. I started reciprocating as well. It's worth noting that she constantly subtly invited me to do things with her when she was first crushing on me.

We text a lot back and forth. We constantly flirt with each other like little children. Her body language just screams that she's into me. She tries hard to be near me. She posts pictures of her and I on her instagram (that gay ass phone shit). All of my friends tell me she's into me and to make a move. So many signs are there...

I asked her out to do things with me three times over the last two weeks. Once, she didn't want to go because the event was gay (which it was, she was right). The second time, she had already made plans. The third time, she had already made plans. It's entirely possible these are valid excuses... but who knows. Anyway, I made the huge mistake of coming off as affected the last time, and I just said "Ah, whatever" with a big smile on my face, motioned her off, walked away giving her no chance to say anything else.

The worst part about all of this is that she gets warmer, and warmer... more flirty and friendly each time I ask her to do things with me. I have no fucking clue what to think and what to do with this girl. I'm afraid she's using me for the attention, or something.

What do I do? I'm thinking I should go completely cold until she asks me to do something outside work. Yeah? What do you suggest? What is this girl doing and what is her deal?

Provide a brief overview of the text.
<bot>: Co-worker girl constantly flirts with me and shows signs she is into me, but I can't seem to get her to go out anywhere with me (valid excuses or not). What to do?