Just tell him.
Talk to the guy and let him get to know you.
Facebook.
that's why flirting is around, mainly flirting will let him know that you like him
Give him little hints that you like him.
Write him a note or tell one of his friends to let him know that you like him.
Well then try and talk to this guy about his interests and let him get to know you. Don't just talk about him though when you're with him also talk a little about youself, take it slow and let this guy get to know the real you.
Let him down gently and let him know you are not interested.
Then don't let him know it hurt you.
by askng him out
Let me know when clear. Like in online games restaurant and zoo story
Tell him! :) Be honest. Let him know how you feel. You never know he might feel the same.
touch his booty and let him know you like him and his booty