wow that was long..haha. considering what you have said, i believe that, indeed she does have her mood swings. she might take it out on you but what makes you different? i would think she takes out her stress on other co-workers including yourself. have you thought that maybe she takes it out on other, but from your point of view, you're only feeling that she takes it out on you because you might want it to appear that way? i know that you're interested in her but keeping it professional. now the slightest hint of interest from her direction would only give you a bigger interest to pay attention to the finer details. say for example when she came into your office at 4pm, then only calls you later just because she wants to you stand next to her. it might indeed appear that way, but is that the truth? she might have honestly needed something from you rather than just having your presence near her.

i'm not sure what this girl is doing, but i do believe that it's hard to understand because you are refraining from telling her how you feel. if i were in your shoes, i would think the situation itself is hard. she is already engaged, which puts her off limits. it's true that these things fall apart but are you willing to risk it? i personally would never date someone from my working place, but you're not getting any younger. moving is also another option. how are the situations when you and her are alone? do you still take out out to lunch and if so, what are they like? raverboy

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...this is just my perspective on the situation...