A complicated girl who i don't understand please help?

ok so theres this girl named Tasha who i really like but i don't know if she feels the same. i started liking her 4 months ago but i am extremely shy so i never said anything. i told my best friend and she told Tasha (i didnt know about this) next thing you know Tasha sits next to me on bench while waiting for bus at school and introduces herself to me, soon after that she says hi to me in hallway and starts convos with me, after i gave her my # and 2 hours later she texts, we flirt alot n text every day 24/7, i took her out twice to state fair and movies, she's been t omy house also and met my family and when they call her my gf she doesnt say anything. while on the "dates" which is what she calls em not me we hold hand, she lays on top of me or sits on top of me, i also lay on her we massage each other genty on face, back or hair i also kissed her 3 times but she just moves face away slowly and continues to do what we was doing. when i kissed her at movies i felt like she wanted to i mean she gave me this signs.. she got "mad" at me for no reason so lens back on my legs and looks at me with "mad" face n starts sucking her lips, bitting them and making noises with them she then takes my hat and covers her face BUT lips with it. after i kissed her she text me that night saying sorry about tonight but she doesnt want me liking her that she sees me more as a friend. i dont understand what i did wrong? we still close, flirt and she even tells me her personal probs and calls me crying when stuff happened to her. we now do more sex flirt then like each other flirt. i dont understand at all... sorry for so much writing i just wanted you guys to know my position. what is her intend? is she playing me? does she like me? i also notice her as a little hoe cuz she seems to "mess" around alot with some other guys from what i seen n hear.... :/