Girl's Behavior

Girls, What does it mean if she let me drink from her straw?

We been talking for a while now and I have never try to make move to show that I like her, because I really don't want to catch feeling just yet. We went to go grab drinks and she wanted me to taste her drink. I was going to lift the cap, but she just told me to drink it from the straw, surprising me. Am I overthinking?
Girls, What does it mean if she let me drink from her straw?
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