陪伴是最长情的告白厮守是最长久的答案
[péi bàn shì zuì zhăng qíng de gào bái sī shŏu shì zuì zhăng jiŭ de dá àn]
Companionship is the longest declaration of love; being together is the best answer. Conveys a deep appreciation for commitment in relationships, where being present for each other and growing old together are seen as expressions of love.