Sorcerers and Saints by Amy Kuivalainen

Melbourne’s magic is broken, and it’s going to take a cursed saint, a surly sorcerer, and a hell of a miracle to fix.

Born into a family of cursed saints, Mara Corvo has never met a heart ache she couldn’t heal. The price she pays for such a gift is that no one can remember her afterward…except for a drunk sorcerer that should never have been able to find her tea shop to begin with.
Augustus Vance has lived with his failure for over a century. In his effort to stop a rogue sorcerer, he killed the woman he loved, and left a hole in Melbourne’s magic that he’s never been able to fix. When a chance encounter accidentally lands him in Mara’s store, he has his first dangerous dose of hope in decades.
If the women of the Corvo family have one golden rule, it’s to stay the hell away from sorcerers, and yet there’s a wild, dangerous magic in play, that keeps bringing Augustus to Mara’s door.
Only together, can they heal the hole in magic, and maybe with a big enough miracle, they might even be able to heal each other.