How do I get him back, guys please help

The explanation was little brief for me to understand the whole situation clearly. Yet, I see where you are getting at. First thing first. Please don't try to change yourself to fit him. Jigsaw puzzle won't be finished if you force the wrong pieces together. If you don't fit with him, it's possible that he is not meant for you. If relationships is a game, winning should be the only purpose, you must not lose because you can only play it once, you only have one life of yours.

If a guy wants to end the relationship, it's usually a final statement, unless they are still good friends. There are two reason, out of thousand, why guys want to end it. One is that he is bored and wants to find other suitable mate. Second reason is that he really mean by saying he can't have relationship because while in a relationship, he may found that he will hurt your feelings more than he can imagine. He wants to make it better by trying to erase himself out of your life to help you.

It's all up to you what you want to believe. However, I recommend taking some time for yourself, because now is not a good time to have relationship for most of people. There may be pocket-full of drama awaiting in the future. Try to focus on developing your personal ability and in the future someone worthy to have you will notice you and you will receive the affection you deserve. Good luck!

I'm gonna guess this guy is about 2-3 years older then you? At least 19+?

If it's something that he feels is fixable in resonable time, he would worked it out with you but unfortunantly it's the lather (I think that's how the saying is use)?

Did he offer an explanation or did he just keep it short? I notice that you are under 18 and maybe he saw some great things in you but there are certain things at your age that aren't going to be learned for another few years, I know you hate hearing that.

You can promise that you'll change all you want but then again, those are just promises. In the next few years, keep progressing and learning about yourself and maybe he'll see the girl he invisioned but right now, there's nothing really to be said.