Why am i

Why do I feel so alone with so many people around, Everyday a smile on my face inside it's upside down, I cry inside everyday but haven't shed a tear in years, People say I always look happy my life's not what it appears Everyone lives two different lives,ones public the others at home Cuz after their day and they step in their home the mask they wore is now gone You never know what somebody feels or what they're going through The only way to truly know them is if they live with you