你是我的未婚妻
[nĭ shì wŏ de wèi hūn qī]
Directly translated, this would mean 'You are my fiancée.' Such a nickname or ID suggests either a playful relationship or serious commitment in a romantic bond, especially when it comes to announcing one’s partner officially or informally. It indicates the owner values this special connection deeply and wants everyone to recognize this important aspect of their life, potentially implying plans toward marriage.