What is the happiest thing in the world? It's about having someone you like and then growing old together.
What is the most painful thing in the world? There is someone you like, but you can't grow old together.
What's the saddest thing in the world? One day, I suddenly found that the person I liked also liked me, but I didn't like him anymore.
What is the most gratifying thing in the world? One day, I suddenly found that the person I liked also liked me, and they grew older together.
Not all beginnings have results, not all dreams can come true, not all secret loves will be fulfilled, and not all stories have endings; but if you work hard, there will definitely be an answer. It is just a matter of time and the length of time.