因为一座城只爱一个人
[yīn wéi yī zuò chéng zhĭ ài yī gè rén]
This nickname reflects a deep devotion and loyalty in love. It implies that one's affection is so strong that they only fall in love with one person within the span of their life. The city symbolizes a long time period or a significant phase of life, adding depth to the meaning of true love.