My crush thinks I hate her?

The second time I met this girl we warmed up to each other and she started to tease me a lot jokingly. We got closer and over time I started to feel romance that I tried to fight at first. We’re both girls but only 2 years apart in our 20s. She’s older. Every time I talk with a colleague I catch her looking at me and once she asked what we were talking about. She talks and says she “loves” other coworkers but treats me different.
She would check up on me a lot especially when I was not interacting with her one day. and I could see she cared about me. I’m dating a guy (I’m bisexual ) and she has not expressed any interest in knowing about him. Another girl also has a boyfriend and she’s asked about their relationship. She visibly gets upset when I talk to him around her. She’s told on me for talking to him on the phone. That’s where our only problem comes from but this is a workplace so we have to act like nothing happens.

It’s been months since our second meeting. There was a period where we weren’t talking due to getting me in trouble. However, recently she’s begun to joke with me again and touch me more. She still always asks how I’m doing.

When we talk once before she has stuttered but she’s a very confident person. She makes a lot of eye contact with me without expression. we stayed late to close with two other people. Her and I talked along with them and our conversation felt very comfortable and natural and just flowed out. It didn’t feel romantic then. I went home happy we talked but when I woke up I started to feel romantic attraction. A customer complained about me to her and said I rushed them when I was so nice! She confronted me and tried to get the full story and told me she didn’t want me to feel uncomfortable and implied that she cared about me. Later she asked me how I felt about our conversation. Another manager has a nickname for me and today my crush said that (me) would punch her if she called me that. Why does she think I hate her?
My crush thinks I hate her?
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