Is he using me or does he like me and not want to admit it?

There is this boy i REALLY REALLY like but he says he doesnt like me but he wants to touch all over me. like really touch all over me like my vagina and he always wants me to send piks of myself naked and all that and i asked him if he liked me n he said kinda but then my friend heather asked him if he liked me and he said no but then the other day he put me as his crush and i was like im ur crush and he said kinda... Does he like me and not wanna admit it or is he using me??? ps. or is he scared to be with me cuz im 16 years old and im only 5 feet tall =( ... no im not happy with my height