乱了夏天蓝了海凉了时光薄了情
[luàn le xià tiān lán le hăi liáng le shí guāng bó le qíng]
'Disordered summer, blue sea, cool time, thin emotion'. This is poetic and implies changes over time - the passage of time has affected emotions, much like how seasons change. It suggests the fleeting nature of passion.