我的今生只为你承着我的今世只为你许着
[wŏ de jīn shēng zhĭ wéi nĭ chéng zhe wŏ de jīn shì zhĭ wéi nĭ xŭ zhe]
This user name translates to 'In this life, I only dedicate myself and make promises for you'. It conveys the idea of total dedication and commitment to someone.