Girls, girls, meeting this girl tommorow, need help?

Ok. I met this girl on the net like 4 months ago and we decided to meet for a coffee and we did. It went well. But then we started talking a lot on the phone and on facebook. And like we laugh a lot and she said some things like :
"Awwwe I'm getting shy now"
"Hahaha u so funny (smiley with hearts)

So tomorrow we are going for a Chinese meal and honestly I have known her for some time and I like her. I'm just so nervous. How do I tell her I like her in a nice sort of way

We are both 18


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