What are subtle signals to give to the boy i like that I like him?

I think i may like this guy.. i want to give him a hint that i like him i don't want something too bold like winking or touching him. the kind of relationship we have is weird.. i cant make eye contact with him because he has gorgeous eyes they are like aquamarine and he can be a turd sometimes but can be so nice. i usually give him attitude and siness and he calls me feisty? i can be nice but im scared to be nice to him. im scared that if i am i'll be to obvious that i like him and im still figuring out if i truly like him or if it is just a crush. im crazy i know. no one knows i like him cause i don't even know. and if i do i wont tell anyone i mean my friend was growing suspicious but i completely denied it and she totally believed me.but yeah. not only do i need help figuring out if i have feelings for him but if i do i need nice subtle ways to tell him? and also he is outgoing, he talks to other girls cuz we are in the schools student body, i don't get jealous cause im not the jealous type. but yeah im in 8th grade so i know nothing is sure because im barely going into high school but yeah. please help with my dilemma if you need more info just email me orr tell me in your answer!:) thanks