What is Love?

When you give someone everything,
you have nothing left.
You've given them
friendship
love
kindness
your hopes
your dreams
your everything.

But when you have nothing, and they still want/need more,
What do you do then?
How do you cope?
Is it possible to go into negative nothing?

Could you take it back?
Any of it?
Could you take it back if you had already given it away?
Is it nonrefundable?

All these qusetions running through my head when all I wanted was one simple answer.
Do you love me?