Take responsibility, learn from it, leave him alone and move on. You're obviously very young so hopefully this is a lesson in thinking before speaking that you can learn and take with you into adulthood. Also im sure a little comment like that isn't just what caused him to cut you out, it's highly likely you've built a mountain of stupid things and haven't realized, and he's finally sick of it. If he wants to attempt at giving you a second chance in the future, which he 100% doesn't have to, he will reach out.