Jeon Jungkook

SO you and jungkook know each other. You two were childhood sweethearts. But for some reason something happened and you left the country. You came back after 4 years and you adopted parents told you to marry jungkook. But because of you that left jungkook 4 years ago and he's parents passed away he became cold and heartless and he promised himself to not fall for you again or will that change?