Advice plz? Already posted before, just more details this time?

So we went to see "Dinner for Schmucks" (pretty funny) So after about 20 min. into the film, she grabbed my hand and rested her head on my shoulder. As the movie progressed, i started rubbing her arm and she pushed it away. Then she started just exploring my arm (grabbing, scratching, etc.) After the movie, i got invited into her house and no one was home, so we hugged for a while and then i had to leave.....We are technically going out but what does this mean? Does she Really really reallllllyyyyy like me? What should i do? We are both 14, and i want .....but we are 14, i didn't want to seem like an . So please just tell me what i should do :p