Girl says she feels cold?

So I saw on one of these questions about ten things to know about girls, that when they say they are cold they want your coat? So how much validity is there to this, Because this girl I like told me she was cold the other day in class and I offered her my jacket and she said she didn't want a jacket. Is this usually a test by you girls or are you just saying you feel cold?
Girl says she feels cold?
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