Robert Laurence Binyon - An Old Answer

Ask me not, Dear, what thing it is
That makes me love you so;
What graces, what sweet qualities,
That from your spirit flow:
For I have but this old reply,
That you are you, that I am I.

My heart leaps when you look on me,
And thrills to hear your voice.
Lies, then, in these the mystery
That makes my soul rejoice?
I only know, I love you true;
Since I am I, and you are you.

Robert Laurence Binyon

http://www.poemhunter.com/poem/an-old-answer/