This is not a dogma, but a stack of letters soaked in fireworks, filled with the stumbles and growth of love.
You will see that in the age difference, recklessness turns into tenderness; in the distance, good night is woven into a rust-free net; in the coordinates of wealth and poverty, the sound of the golden spoon hitting the canvas shoes is the most moving.
There is no standard answer, only the sudden realization that "it can be like this" - it is the memory that she needs to add two spoons of vinegar to eat wontons, the patience to flatten her wrinkled report form, and the confidence built up by countless "I understand you".
The concept of emotion is never a mold, it is the warm temperature in "give the warm water first or fight to win or lose", and the clear shape in "should you be decent or comfortable".
In the end, you will understand that a good relationship is never a matter of luck, but how you treat it will determine the outcome it will give you. The fireworks are broken into pieces and put together, enough to illuminate the days to come.