陪伴是最长久的告白吃醋是最真实的告白
[péi bàn shì zuì zhăng jiŭ de gào bái chī cù shì zuì zhēn shí de gào bái]
This suggests that companionship and staying by someone's side for long durations can be the most heartfelt form of love expression. Similarly, jealousy in certain contexts might mean real love.