娶你的人必须是我嫁你的人必须是我
[qŭ nĭ de rén bì xū shì wŏ jià nĭ de rén bì xū shì wŏ]
This internet nickname reflects a romantic and intense longing for a person's exclusiveness in marriage, implying that no one else besides the beloved is suitable as their lifelong partner.