Girls will flirt, but say (eww)?

Back story: I work with this girl and we flirt back and forth. She always has a smart playful comment when we talk. She even does it when I’m talking with other coworkers.

I had a question at work one day and asked another coworker if she would help me. I was seated at a desk and she was standing. She placed her hands on the desk to get a better look at my screen, when she moved one of her hands it accidentally touched the top of my knee. She said sorry, later we joked about it and I said I might have to tell HR about this, she said shut up you like it. I said maybe I did. Haha (knee girl said don’t tell her I told you this) Later on that day the girl who touched my was talking to the other girl who flirts with me about it joking saying I bet he has a hard-on over it. lol The girl that flirts with me said (eww) why do girls say that if you flirt with them.. jealousy?
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Thanks man for the advice. Yeah, girls can be wired and confusing. The other girl definitely not letting any lines being crossed. I’m just feeling things out with the one and enjoying our banter. The comment eww just threw me off.
Girls will flirt, but say (eww)?
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