How much time does it take to make an Introvert girl fall for me?

Girls (especially Introverted ones) how much time does it take to make an Introvert girl fall for me, considering that I'm a normal person (not introvert or extrovert) ...
And how hard can that be?
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+1 y
And any advices on this topic will be highly appreciated :)
How much time does it take to make an Introvert girl fall for me?
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