There's always someone. There's always someone out there loving you, smiling for you, smiling because of you, giving up something for you, dreaming of you, crying for you... There's always someone. And then there's you. There's your smile, your love (or lack of it), your decisions, your dreams, your tears... The reasons behind them all.

It's action-reaction. It's always action-reaction.

She smiles-you smile.
He talks-you're silent.
You dream-you suffer.

And then it goes back to the start again. But the thing is, either way, if it's at the start or the finish line, there's always someone. Even when you know not of their being, there's always someone amongst all people.