How do you tell him how you feel about your relationship?

Well to start off, if I were you, I'd make lots of hints and flirt a lot. See if he catches on.If he does then great, he might ask you out (:

But if he doesn't catch on, then I suggest carry on flirting, go with him at every chance you get, be with him a lot. Then when you're alone, tell him how you feel, he might feel the same about you...This worked for me.