I want to be a part of you,think of all the things we could do

A typical story:i have a huge crush on this guy that i have known for 2 years and idk how to tell him how much he means to me,if i tell him he'll think im playing around,cuz usually im always teasing him and he teases me,i can't even get to talk to him privately cuz hes always with his friends,and even if i try to talk with him i'll be too shy,please help anyone