What does it mean when a girl doesn't mind being in her personal space?

Greateye

If you're barely are considered an acquaintance, would this be a sign of attraction or comfort (in a friendly way)?

If you accidentally get into her personal space and she doesn't mind, would most girls get uncomfortable if they don't like the person?

Why would you be ok with a person be in your personal space?

This is referring to areas where there's enough of space for people to move around and some would get closer by their own will.

What does it mean when a girl doesn't mind being in her personal space?
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