I am glad you know you have to leave him and I hope you do.
You have a bright future ahead you and life goes on. Go to college and have fun. This guy is no good and he will only make your life miserable and he can't be trusted.
Never let someone be your everything and never let your feelings interfere with your common sense.
Now pick a college and go and explore. He isn't the only guy in the world there are others that would cherish you.