My all in one

First you were a stranger to me,
but now you´re all that I can see.
It started with a simple wink,
now you´re all that I can think.
We laughed and cried,
phoned late at night.
There came hundreds of butterflies,
but none of them dies.
We became best friends,
that´s something that never ends.
Together we are strong,
but all alone just feels so wrong.
There´s something missing,
and it´s not only the hugging and kissing.
It´s you and your heart,
you, my better part.
I want to feel your breath next to mine,
´cause then I know that everything´s fine.