Because.

The darkness cannot hide the light.
For it exists because of it.
Without it, it is nothing.

Lies cannot kill the truth.
For they exists because of her.
Without it, they’re nothing.

Death cannot end life.
For he exists because of her.
Without her, he is nothing.

So it seems I can’t be without Υou.
Because;

I am darkness and Υou are light,
I am lies whereas Υou are truth,
I am death and Υou are life.