I am a ghost

I am a ghost,
Though this could be my cry.
I travel from place to place,
And watch time pass me by.
I live a life of solitude,
But try and make friends when time is free.
I like to sneak up and scare people,
It makes me so happy.
Though my life is very sad,
But it fits me like a glove.
My life is so because I cannot,
Experience true happiness or true love.
People see me on the street,
And their faces look filled with fear.
When I see it on their faces,
My eye lets out a tear.
I move in and out of people's lives,
Though I do not mean to boast.
But one thing that I must tell you all.
It's a sad life to be a ghost.