Is this girl flirting with me or is she just being friendly?

Alright, so I went to this game and on the way back we took a bus which was known as the fan bus which has a mix of grades from freshman to seniors. Anways It was about 10 pm and I'm talking to my friends like usual when all of a sudden a girl behind me takes my hat and says I like your hat. I already knew who was sitting behind me and it was this freshmen who I don't know, and I don't mind when girls do this stuff so I was just playing along and acting like nothing happened. Then she starting playing or petting my hair because it's short. Then randomly she says wet Willie but I guess she misses since I'm listening to music and I was still pretty cool about it since this has never happened to me. My friend and I switch seats so I can draw on my friends face and after I drew on his face the girl was sort of talking to me. She does like all the weird/cute things which I found funny and then she touched my ear for some reason, I have no clue. Later she was like I'm gonna friend request you on fb and I was like nice but I was pretty happy because I've never had a girl approach me like this. Once we got off the bus, idk if it was her or her friends but they said "she wants you." I got home and was thinking about her, and I friend requested her late Friday which was the day of the game. She hasn't accepted it yet and I know she's been on because of the status she's posted up and the recently added friend thing. I'm wondering if she could be teasing me there because she knows my name because she got my attention by calling me by my name. I asked my friend on what he thought and he said she's probably likes you. Ok I'm a sopre and she's a freshman. So help me out here. P.s. I've never met her until that day and her attitude seems more like a funny/easy to get a long person. So help me out here!!