Might she like me?

There's a girl in my group of friends at college. She's one of my best friends here. I'm really starting to like her as more than just a friend. I can't figure out how she feels about me though. I'm not sure if she likes me as more than just a friend, or if she just prefers me over the other guys in the group. She looks at me and make silly faces at me a lot of the time. She rests her head on my shoulder all the time, etc. Stuff like that. I'm not sure if she just feels comfortable around me, or if she likes me. Today, we were also at a show, and she would look at me a lot when she laughed, and there were a few times she put her head on my shoulder. Also, when I left after we were hanging out tonight, she hugged me, and wouldn't let go of me. I laid her down on a couch and she still wouldn't. After that, when I was trying to leave again, she did the same thing. Then as I was leaving she said, "I didn't get a hug." And did the same thing yet again.