我们的爱曾蔓延过大街小巷
[wŏ men de ài céng màn yán guò dà jiē xiăo xiàng]
This nickname expresses nostalgia and reminiscence of a love that was publicly visible. It indicates the love was so profound and public that it spread through every street. In other words, this nickname conveys an overwhelming sense of past romance and longing for that period.