What is the next sentence of the famous saying "Behind the smile there is happiness and sadness"?

1. I smile without showing that I am happy.

2. I laugh just to prevent others from being sad.

3. I laugh because I see you unhappy.

4. I laugh just to make you happy.

5. Friends around me always say that I am smiling all day long.

6. Wherever I am, I will always bring them laughter.

7. They think that I am always so happy, and they cannot connect me with depression at all.

8. But only I know that just because I smile doesn’t mean I’m happy.

9. Maybe I laugh to better protect myself.

10. I smile just because I don’t want you to see my unhappiness.

11. I laugh because no one can understand my heart well.

12. Because you always smile happily, your sadness is often ignored by others.

13. Gradually, the grievance has turned into a habit.

14. Thinking about it quietly, it seems that I have never been unhappy in front of others for a long time.

15. It’s not that I don’t have sadness, it’s just that I don’t want to show my weakness in front of others anymore

16. No matter how sad I am, it only belongs to me