You and You

They say there is one person
In the world that looks like you
So if you are one and he is one
Then together that makes two

This of course begs the question
That if he thought like you and talked like you
Then would this other he, in fact,
Quite possibly be you?

And if then by chance
You and you were to meet
Would you be able to tell
Yourself from you two?

Or would it suddenly
Appear to be as such-
That you were no longer you
Indeed, but one or the other?

They say there is one person
In the world that looks like you
It is a wonder that if you met he,
Would you reform yourself anew?

And if such were the case
Would he do it too?