他已深深刻在我脑海她已深深印在我脑里
[tā yĭ shēn shēn kè zài wŏ năo hăi tā yĭ shēn shēn yìn zài wŏ năo lĭ]
This username reflects deep affection or attachment. It conveys the idea that someone, likely a lover or a significant person, has left an indelible impression in the speaker’s mind.