Are you afraid of her because she's kind of controlling? Don't let her rough ways intimidate you. If you want to get away from this girl just tell her. I don't think there is no way you can lie to avoid a girl thats in four of your classes. Just pull her over to the side one day and tell her that you guys can't be friends. You two are completely different and she's in somethings that you would never try doing. Honesty is the policy. I know that it may be hard but you'd have to do it some day anyways. Good Luck, :)
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They're people who want to screw around all the time,
which interests me not at all.
God knows we've done that, been there,
and we don't want to do that any more.