How can I say I dont like you to a girl?

Hi everyone, look. I met a girl last week, she is 16 and im 19 and she asked me out!!! I mean I KIND like her but im a young adult and she is still a teenager, i wouldn't do anything to her and i dont want to hurt her, she is so friendly , i just want to be friends!

How can I say I dont like you to a girl?
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