Perhaps:

Just because you assume
does not mean its so
Just because it said
does not mean I thought it
Just because you think it
doesnt mean I want it
Just because you are here
does not mean I am there
Just because you smile
does not mean I laugh
Just because your white
does not mean I am black
Just because your heart falters
does not mean mine has died
Just because you fall down everytime
does not mean I am any stronger
Just because you made it
does not mean it will stay as so....

Perhaps....

Perhaps not....