Everything has changed between us..i dont want to leave you....Seohyun and Yonghwa are a high school student. They have a very different personality. Yonghwa is kinda handsome bad boy types while Seohyun is goody girl here. They mutually become close at the hospital after they know each others sickness. They let the self to come into their livesps: I choose the tittles name Everything has changed because I always get the inspiration for this story after hearing Everything has changed by Taylor Swift feat Ed Sheeran ;)   ForewordHello guys this is my frist fanfiction, there is still some lacking in the story so i am apologize for it. The story has been in my mind since I was 13 years old, but I didnt know who will become my character. And then I became a fan of Yongseo. So I decided to make them for my character.This story is not related to any story, this is pure my imagination. Thank youEnjoy Reading :)Comments and subscribers are appreciated ;)