Cupid

I want you to picture this:

A whole world of the most mystical creatures living in harmony, far away from the pollution of humans. This world was called Fae.

Cupid, one of the holy gods of that world has one single underling. Her name is Amara, she was born with glorious beauty, turning heads everywhere. Her personality however, was not as pretty. She tended to be more stoic and serious. But she was not heartless, as she learned the art of love from Cupid himself. She even had the bow and arrow of love. Amara often travelled to the mortal world to shoot her arrows, but not one mortal can ever see her. It was humanly impossible.

Amara then meets Troye, a Manod. Its what the creatures back home call the humans who can see them when they visit the mortal world. They're very rare and there haven't been any signs of them for decades. Intrigued, Amara decides to stick around him.

Troye is lonely.
Amara can fix that.