Why exactly do I look like a "mean girl"?

Everyone I know says, "I can't believe how different you are than what I though you were like. I thought you'd be a total b*tch!" It kind of hurts. I try so hard to be nice to everyone and smile all the time. My friends are a little conceited, but I go out of my way to not be like... show more Everyone I know says,
"I can't believe how different you are than what I though you were like. I thought you'd be a total b*tch!"

It kind of hurts. I try so hard to be nice to everyone and smile all the time. My friends are a little conceited, but I go out of my way to not be like them.
Girls whisper about me and start rumors. It's becoming a huge problem.

Why is it that I look so mean?
How do I appear to be nicer?
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