你是我忘不掉的伤刻在心脏
[nĭ shì wŏ wàng bù diào de shāng kè zài xīn zàng]
A deeply sentimental username. It literally means 'You are the unforgettable wound engraved on my heart.' This conveys a strong sense of unerasable pain, love, or regret about someone who has had an enormous impact on the user's emotions.