当初不珍惜你活该忘不掉
[dāng chū bù zhēn xī nĭ huó gāi wàng bù diào]
'Deserving To Not Forget You Because I Did Not Treasure You Then' expresses regret and longing. It suggests someone may have once let go of a cherished person due to lack of appreciation at the time, leaving behind lingering feelings.