Girls do you think she likes me?

Well there is this girl in my study hall who I think is pretty. I think she likes me to because she always similes at me and looks at me when she laughs. One time her friend wanted to go to another room but it seemed she came up with reasons not to leave and she started sitting closer to me. Then one cl this kid was talking to her and he was like do you like me and she was like no and looked at me and every time he asked her something she looked at me. One cl it seemed like she was trying to make me notice her more because she was being really nice to this other kid and kept looking over at me. So I gave her my phone number but she hasn't text me yet and were friends on face book but she doesn't seem to be on but we had a nice talk a few days ago but idk if she likes me that much. BTW I am a Jr she is a freshman were both in HS