I don't know how much older than you he is, but here's my initial thought. It is difficult for an older guy to date a younger girl in many ways, until you're both adults.
As you get older yourself, you'll be able to see how 'young' teenagers seem to be. But I know when you're still a teenager you probably feel very grown up.
So if he's a few years older than you, I think he's best is one of those stories parents end up telling their kids about in years to come. You'll probably have a teenager of your own one day who likes an older guy, and you'll be telling the story about the guy you liked but couldn't date, so you know how she feels. It might be hard to imagine, but someday you're going to be a sympathetic parent who your kids think is really great!