有种投入叫忘乎所以有种思念叫念念不忘
[yŏu zhŏng tóu rù jiào wàng hū suŏ yĭ yŏu zhŏng sī niàn jiào niàn niàn bù wàng]
This nickname suggests someone who gives everything they have in certain situations, such as being fully absorbed in love. Also, it implies the kind of longing that never forgets a person or something precious to them. The sentiment is intense and enduring, highlighting depth and emotion in their character.