It doesn't matter what happens from here on out. You can break up now. Go through your life. Fall in love with another person. Make a new life. Etc. But when it's meant to be then it will be. And there's nothing on earth that can stop that.
Sometimes when you're wrong. You just have to admit you were wrong. And there's nothing around that. You just have to face what you did. Apologize and keep it moving. Sometimes you just have to put your ego aside and say you're sorry for all the things you did wrong.