What is love?

Is it when the young school boy gives his chocolate chip cookie to the little girl beside him, who got oatmeal, because her favorite  is chocolate chip?

Is it when the teenage girl stays up late into the next morning, thinking up scenarios in her head about the way things could have been between him and her?

Is it when the elderly man gives up his jacket, on a cold winters night, to the homeless boy that lives in the alley?

For who are we to determine what love is?

Love is unconditional.
Love is unpredictable.
Love is undefined.