how to get him!

so im pretty sure im falling for this guy. hes two years older then me, hes 17. ive never liked an older guy before. and well i have only hung out with him a few times but aparently he likes me too.. i should be happy right? well i am.. i think hes shy though.. like really shy. and i dont know what to do. i try texting him and he rarely replys. and i dont know what else to do to reeel him in...any ideas?

just tell him flat out "I love you" or you can do it elementary style write him a note written i like u do u like me check yes or no