愿有岁月回首且以深情白头
[yuàn yŏu suì yuè huí shŏu qiĕ yĭ shēn qíng bái tóu]
It expresses a romantic sentiment, hoping for a time in the future when one can look back on their life with deep love until they are old. It implies a longing for a lasting and heartfelt relationship.