Not much I can add that my colleagues have already told you. But your profile states that you are 14. You need to give yourself a chance to explore other relationships.
At 14, we all thought we had lost the "love of our life" but you have so much dating and living ahead and if he is as young or slightly older than you are, he may be wanting to explore his options as well. Give yourself some time to get to know others before you just settle for a guy who YOU have to pursue.
You can remain friends and see how it goes...you never know what he might be missing if you take it slow and date other people. Never try to change him because it will never happen.....you can only change yourself and how you react to him and others in your life.
Good luck sweetheart, you have so much ahead of you to try and connect with a guy who should be pursuing you! Remember, measure life not by the breaths you take but those who can take your breathe away. Sounds like he may not be worth your time, so find someone who does. Look ahead and not behind you...
Best wishes and good luck,
Katie