Right or wrong doesn't matter. Here, it's illegal for two people that age. If you have any physical relations, he could go to jail and forever be branded as a child molester. I suggest that you find someone your own age and stay safe.
Since you're sitll a minor, it is illegal for the two of you to have a relationship (especially a physical relationship). Once you are 18 or older, then age difference shouldn't matter. So for now, I'd suggest not making any advances or reciprocating his advances to be safe.
To me... Age doesn't matter. At first I thought that it would be kinda wrong but then I realized if you really love someone, then go for it.