Do you think this girl likes me?

Okay, I'm a girl but im not necessarily into girls. This girl is always hugging me and grabbing my arm and one time she kissed me on the cheek. She always wants me to walk with her to lunch. One time she was all in my space and I said " Why are you up under me" and she said "Why? would you rather be on top". Then we were in gym and the whole class was trying trying to figure out what to do and she suggested to play "Red Rover" and immediately grabbed my hand. AND THEN when we played I accidentally squeezed her hand and she started stroking my hand with her thumb. Every time shes around me she holds on to my arm or gives me hug. We're both Freshmen in High school and I would think she was the farthest person from being gay, but again you never know. I can't tell if shes joking or not.. What do you think? What do you think I should do? This question may sound Naive, but i'm just curious..