If you truly want to be with someone forever, then don't rush to show her how good you are to her. If you do everything to such an extreme extent, she'll feel, in the future, that you're never quite good enough.
Moreover, simply being good to someone may not necessarily win you true love. In love, there should be no looking up to anyone. If one person is too humble, that love is most likely doomed to fail. What he wanted was equal love, to nurture each other through life. Therefore, he needed to stick to the rules, proceeding step by step, to achieve everlasting union.
After dinner, Li Qingshen drove Ling Momo home, his driving steady, as graceful and composed as the man himself.
Just like on the way there, the car remained silent. Ling Momo couldn't sleep and didn't know what topic to bring up. The silence made the atmosphere awkward, so Ling Momo thought for a moment and then said, "Um, let's play a song."