Is there a pattern for girl's behaviours?

Specifically after talking to any girl, they often undid their ponytail to unleash the sexy female hair. Is that an attempt to seduce me? (Dont exaggerate, I mean is that a sign of liking?)
In other cases a girl walks around with loose hair and after I show interest she would tie her hair up, what does it indicate? I assume it's sometimes done to "repel" me?

Any other comments?
That's the purpose of our hair!
There are patterns but the hair is not one of them.
There are no patterns in girl's behaviour.
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Is there a pattern for girl's behaviours?
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