Does she like me back?

I'm really in love with this girl, but I don't know if she likes me back or not. We're quite good friends, and she talks to me a lot. She always asks me to sit next to her on the bus, she asks me to come with her in ques and things, she dragged me half way around the clroom away from another girl to sit next to her last week. She asks for piggy backs, and she has invited me round so she can straighten my hair. We always playfully tease eachother, and I really like her. Does she feel the same?