心跳多久爱多久呼吸多久念多久
[xīn tiào duō jiŭ ài duō jiŭ hū xī duō jiŭ niàn duō jiŭ]
This username plays on Chinese romantic language structure. It roughly translates to as long as the heart beats (meaning alive), will love; as long as breathe, will miss you. It conveys unending devotion and endless remembrance in terms of romance.