This song is "Completely Forget You", originally sung by Jiang Yuhua.
Part of the lyrics of "Completely Forget You": But I have to completely forget you, forget your taste and your voice, don't torture yourself anymore, you will never marry anyone who is not me, as you promised , but now I have to completely forget it. "Completely Forget You" lyrics: Hai Sheng, music: Hai Sheng, sung by Jiang Yuhua. Release date: 2014-09-15.