Why do Gemini people have dual personalities, laughing in front of people and crying behind them?

Gemini has two hearts and two brains, and worries and thinks many times more than others. I'm a Gemini, too. In fact, I'm really sad. Gemini doesn't like to cry in front of others, and wants people to feel how strong they are. In the eyes of many people, Gemini people are lively and optimistic by nature, but how can people who are not Gemini know our inner feelings and how much we are eager to be valued and recognized? I hope that Gemini, who sees laughter and laughter in front of outsiders, will also be rendered by this happiness with others. Maybe some Gemini don't think so, but Gemini is just thinking of others and worrying about their happiness. I hope they can be moved by this happy smile, that's all. Behind us, we just bury our pain and tears in our hearts and don't want people to see our most vulnerable side.