一生一世一双人半醉半醒半浮生
[yī shēng yī shì yī shuāng rén bàn zuì bàn xĭng bàn fú shēng]
This nickname expresses a pursuit of lifelong love with someone, while living in a half-awake, half-dreaming, carefree state, implying the hope for a long-lasting romantic relationship as well as an easy-going life attitude.