請問一下～

悲傷戀歌主題曲名為﹝即使過了十年﹞, 由宋承憲主唱。
有關 MV: http://www.youtube.com/watch?v=aXMHEohId5w

There are many theme songs. According to the Korean newspaper 朝鮮日報, there should be at least 3 of them: 《尹健's Sad Love Story》中共收錄了主題歌《說好要分手》和《如果相愛》以及《星星》.