一个爱人刻骨铭心一段感情永不忘记
[yī gè ài rén kè gú míng xīn yī duàn găn qíng yŏng bù wàng jì]
This means 'A love that leaves an indelible impression and a relationship never to be forgotten.' It conveys a strong emotional connection that remains unforgettable over time, emphasizing deep love and lasting memories.