Tiffany Hwang.Who doesn't know her? She is the nation sweetheart.Even other singers can't beat her voice.Sweet as honey,soft as cotton.And Kim Taeyeon,the popular solo singer.His unique voice,and also his cute baby-face is enough to make the whole country fall for him.They work together under the label - SM entertainment.Very close to each other,makes one of them heart flutters.Will another heart flutters too? Is it hurt when the one you love is dating someone else?