Why won’t this girl make a move on me?

Anonymous
I’m in a relationship with my girlfriend that I love, but I’ve lost that “spark” with her. I’ve fallen for this girl that I work with and I believe that she likes me too. Any time I flirt with her, she won’t flirt back or reciprocate any type of affection. When I ask her out on dates, she turns me down. However, she clearly gets jealous over me and my friends have caught her staring at me multiple times. She pokes fun at me (classic schoolyard teasing the person you have a crush on). Why won’t she make a move on me? Does she just not like me enough?
Updates:
28 d
By the way, she is openly bi (we had this conversation), so this isn’t me trying to “turn” a straight woman.

Why won’t this girl make a move on me?
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