Falling in love make your heartbeat that you cant explain but there will be always a heartache at the end no matter what. For the one hurting and the one who hurted the one she love.The simple love and heartache of all people experience. ForewordIm Yoona - a beautiful girl and the most independent person you can ever meet. Never had a serious relationship before after she meet HER.Seo Junhyun - a simple college student who want to be a nurse for her parents . And a girl who never had a lover until she met her.