Why do I feel alone?

I'm not sitting in my room at home
I have all my friends around me
So why do I feel alone?

I'm walking with my friends
Our arms are linked, we smile and laugh
I reach out and hug them tight
But to them, I don't feel close

I can see them looking at me
I look at them, into their eyes
We all smile together
But I don't feel the happiness

I'm sitting in my room
So this time I'm truly alone
I can stop pretending I'm happy

*written directly from how I feel at the moment*