Tell him the true about how you feel. He may feel rejected but that’s a lesson we all need to learn. Not everyone will like you in this world just because you have feelings for them.
tell him you like someone else
edit: you are not required to be honest with everybody, that's suicide. some people are pester
Drop him with a face jab and kick him in the ribs on the way down.
well...tell him that. In terms he can understand. And then by no means allow him to stick his tongue in your mouth..'cuz that just really changes things...!