Immortel Amour

The Almighty created three other races along with the humans.
Out of these three, two of them were given a purpose by the Almighty.  
However, one of them found its purpose later when he met a mortal girl while escaping from other mortals.
He had no idea why, or how, but he’d fallen for that mortal girl.  He was in love with a mortal.
Will he ever be able to tell her?
Or will she be taken for sacrifice when someone discovers that she's a part of an ancient sacrificial ritual? 
Or will he save his true love?