How can i get this girl aroused or horny verbally or physically?

There is this very popular pretty girl shes older and we have a class together in highschool she mite maybebe a lil interested in me but we rarely talk. The other night at a party we danced together and i felt up on her but we still didnt talk and i kind of perpetrated it, she didnt walk up to me i had to start grinding on her. So my question is what can i say/ do to this girl to get her horny? ill prob see her at couple of parties during the summe rwhat should i do to get my mac on and arouse her?