Man of momentum

Once there was a man, who moved in circles,
He came across a woman who never seen him coming,
He took her heart and played it like a harp,
But what she discovered about him was that he had broken many before her,
She fell down and down under the weight of his charm,
till at last she hit the bottom, then the only way was up,
So the man who moved in circles, settled for an owl,
He swapped it with the woman, she had a black crow.
They passed each other some time later,
But they never stopped to say hello..