Umm iam not sure if i fancy the person?

i used to fancy him in yr7 but later i didn't,but now iam not sure if i like him or not.i mean i told my friends that i used to fancy him for one week or somefin.which is not true i faniced him for more then that.i can't tell my best friend that i might fancy him because she completely hates the person.she used to fancy him too.then there r my close friends but i think they fancy him too so i can't really tell them. sometimes when i think aobut him it makes me sooo mad.whenever we r together we always argue and stuff but there r gd moments,but mainly arguing. he always teases me,well i do tease him a lot,but we r gd friends. but when we r really close and stuff i get flustered and stuff.but i don't want to admit that i like him i don't know why,wat is this feeling?plz help