待我长发齐腰少年倾心她人
[dài wŏ zhăng fā qí yāo shăo nián qīng xīn tā rén]
This poetic phrase means 'When My Long Hair Reaches My Waist, That Young Man has Fallen in Love With Someone Else'. It describes disappointment in love where while the person was waiting or expecting something from someone special, they realized that person has chosen someone else.