Does she have a crush on me?

there is this girl I really like and she seems really active around her friends and she flirts with some guys in cl a lot and they usually just fool around and she is loud with them and I some times catch her staring at one and smiling but when she sits next to me she sometimes fidgets like crazy and glances at me every 10 seconds and when I catch her she whips her head back looks down slightly and smiles but still fidgets. After awile if I dont talk to her shel say something to me like I saw you at mcdonnalds and wel talk for a bit and she talks realy quiet when we do and shes constantly twirling her hair while she is and will lean in close to me while she talks, and when I respond by talking to her she turns her legs and chair twords me and tilts her head slightly to the side and looks straght into my eyes with a wistful smile on her face and eyes wide like she injected herself with herowin. only then will she calm down. one time the teacher let her sit with her friend and instead went over to the empty chair next to her friend and moved it over to the other side of the table next to another empty chair and asked me quietly to sit next to her. we were watching a movie and she scooted her chair closed to mine and leaned her body close to me not enough that we touched but close enough that some of her hair got in my mouth and she giggled and glanced at me every time I laughed at the movie. Also when we talk she puts her hands close to mine. One time I asked her friend where she was and when she came in her friend told her I was asking about her and she looked and stared at me with a beet red face and smiling and twirling her hair with a tilted head and wide eyes.She never does this with her guy friends or any other guy why does she do it with me?