Lucy Burroughs answered
If you're at the age where a year's age difference is still a big deal, then it's probably best to forget about him. The chances are he thinks you're annoying because you're younger than him, and that's not likely to change until you're both older.
The worst thing you can do when somebody finds you irritating is try to change their mind. I know it's tempting to keep talking to them to convince them otherwise, but that's only likely to annoy them more.
Instead of pursuing a guy who isn't interested in you, try to move on. That doesn't mean you have to pounce on the next boy you see - you can move on without finding someone else.
You might want to try the following things in order to get over him:
- Try not to see him. There's some truth to the phrase 'out of sight, out of mind;' if you're not bumping into him every week, and he isn't constantly popping up on your Facebook feed, you're less likely to think about him. It might be hard at first, but it'll get easier!
- Spend time with other people, and keep yourself busy. If you're having fun without him, he probably won't cross your mind as much.
- Make a list of all the reasons why he's not that important. You can do this in your head if you don't want to write it down. People tend to be more attractive when they're unattainable, so it might be that you're interested in him because you know he doesn't want to date you. Once you get to know someone, you discover things about them that stop them seeming so perfect - you might have found him annoying if you'd started dating!