My heart forgot its God for love of you,
And you forgot me, other loves to learn;
Now through a wilderness of thorn and rue
Back to my God I turn.

And just because my God forgets the past,
And in forgetting does not ask to know
Why I once left His arms for yours, at last
Back to my God I go.

Emily Pauline Johnson

http://www.poemhunter.com/poem/a-prodigal-2/