advice please??

ok so i am in total love with this guy who is a grade above me and we r good friends.. i rlly want him 2 kno i like him but i dont know how 2 tell him..im scared that if i tell him that i like him, he will freak out and never tlk 2 me ever again... i dont think that he knows that i like him but he might.. he has sorta been avoiding tlking 2 me 4 about a week.. i try 2 forget about him سے طرف کی saying that i have no chance with him but whenever isee him, i melt.. he is my perfect dream guy but he is graduating in july... at the 7th and 8th grade dances, he always asks me 2 dance with him and i try nd tell him thn but he always looks at me with blue eyes nd i just cant get any words out.... i just rlly want to kno how 2 tell him that i like him without him freaking out... advice?