I told her how I felt way too soon and she ran. What do I do now?

I told this shyish girl how I felt too soon. We hadn't even kissed or anything and I think I blew it by telling her I really liked her too soon. Naturally she ran because she's insecure (acc. to her friend) so I'm not sure what to do. I know she feels somewhat the same as me because we act differently with each other than we do with anyone else. Have I blown it or can I do anything? We talk and that but there's tension, I just want to grab her haha.
I told her how I felt way too soon and she ran. What do I do now?
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