I'm going to this girl's house. What should I do?

*Disclaimer: Not talking about sex*

My first question was about a sophomore girl. This is the same girl. Me, her, and her friend are going to be hanging at her house tomorrow and I don't know if I should make a move, tell her I like her, or leave it alone and act normal, or WHAT. Any ideas?
I'm going to this girl's house. What should I do?
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