I think it is awesome you extending your love to a disadvantage person for sure! yes it might be hard at first but you will learn to use sign language as well ! so there is a benefit to it! if you do not understand draw a heart and your name and his ! he will cherish it for ever and even plaque.... make sure you do not lose the friendship though
Forget the age! Go for it.
Ask if he thinks of you as a sister first though... Tell him you love him too (if you do)
Why does it matter if he's deaf again?
Ahh, well then, even better. Sign to him and ask if he wants to go out with you, slip a little flirty smile in there if he reads lips, I'm sure he will appreciate it, I would
Well, I'd wait for him to make the first move. Or talk to one of your friends about it! My friends ended up playing match-maker and it turned out awesome :).
He is your best friend, therefor even if he doesn't feel the same he will respect you and it won't change. If you ask him out you have nothing to loose. You might try suggesting your feelings subtly at first and see how he reacts.
You gotta find out if he thinks of you as a sister first
I was really close to a lot of women but theres only a few I thought of as a sister
one of them wanted to try the sex thing I went with it and it became awkward since because she was my sister in my mind
I hate to pull the age thing, but at your age it is a pretty big risk, because extremely few relationships started that young actually work out. I'd wait it out and see if you both feel the same way in another 5 years or so.