I can't add too much to what has already been said, which is all very excellent advise by the way...except...

Just be yourself and love that precious gift from God with all of your heart. Think of him as a gift from God and you should do just fine. My YF was around nine when I first met him and we became good friends. I think that is a fine age! Hopefully you will be able to be with him for many, many years to come.

Oh, and welcome to CBLF!