晚安是最暖心的情话陪伴是最长情的告白
[wăn ān shì zuì nuăn xīn de qíng huà péi bàn shì zuì zhăng qíng de gào bái]
In English, this would be something like: 'Goodnight is the warmest sweet talk; being there for someone is the most enduring confession of love'. The nickname portrays deep love through consistent presence and care.