不离不弃开个玩笑而已
[bù lí bù qì kāi gè wán xiào ér yĭ]
This username, literally meaning 'Never leave or abandon - just a joke', combines an earnest vow of loyalty with a lighthearted twist. It conveys that the promise made may not be as serious as it initially seems, adding a humorous touch to declarations often used in romantic settings.