Come and Go

I thought it's like hundredth time this thing happen,and i am getting bored?i doubt..
People come and go in our life.one moment they come as a friend and going to that "always by your side" and blahblahblah phase.they promote theirselves so wonderfully and try to make you believe what they said.
But by time goes by,there are none who really did what they say.
People say,value the one who stays
Well,stay?like forever?
Even shadows leave us in the darkness!