为你的小情人唱一首小情歌
[wéi nĭ de xiăo qíng rén chàng yī shŏu xiăo qíng gē]
'为你的小情人唱一首小情歌' can be rendered into English as 'Singing a little love song to your young love/mistress,' showing tenderness and affection toward one’s lover, especially used endearingly in casual contexts.