Those Words I Dread by Tess Barnett

When Trent Fa, misanthrope and self-induced loner, finds an injured man in his apartment, he’s ready to call the police. When the man tries to tell him that he’s not a man at all, but a fairy, Trent is ready to call a mental hospital.
Ciaran isn’t what Trent would have expected a fairy to be–he’s handsome and sly, with a thick Irish brogue and a biting wit. He says he’s on the run from a hunter of all things dangerous and supernatural, and he makes himself a hideout of Trent’s posh apartment despite the other man’s misgivings. The two get along like a pair of bad-tempered cats, and neither of them are interested in romance.
Despite having a hunter on his trail and a bad history of being used, Ciaran can’t seem to help noticing his reluctant host, and Trent is finding it more and more difficult to keep his desires closeted.

The first in an ongoing series.