What's going on does my female friend like me?

I'm a sophomore guy and my friend is a junior girl. We met this year cause we have orchestra together and we've grown alot closer over the past few weeks. In class, she sometimes completely ignores me and talks to other people in the class, other times she looks at me and we talk and laugh at each other. We went to state competition on Saturday and on the bus ride, she was looking back at me and smiling and doing things to make me laugh. We went out to eat with like 7 people and we both were there. When I got there, she was like heyy it's (my name) and smiled. She kept looking over when we were laughing and was really the only one that was directly talking to me. Her and her friend left a little earlier and she was hesitant to leave. While we were there, she talked about some of the people she "dated" back in middle school. I think she has a boyfriend now so I wouldnt think she would like me. I'm just not sure what's happening what do you think?