Edge of Darkness by M.A. Church

Sometimes the dragon gods make mistakes.
That’s the best rationale Hudson can come up with. How else can he account for the fact that the one he’s falling in love with is not his fated mate? Getting involved with someone he doesn’t share a soul bond with could be devastating, but Hudson is willing to take the risk. Connie is his and nothing will stand in his way of having him.

Sometimes the dragon gods might be more clever than anyone gives them credit for.
A sassy human stumbles into Hudson and Connie’s life, upsetting their very existence. How can Hudson and Connie have a soul bond to Kit… but not each other? Are the Fates drunk? Or testing them? Dragons are possessive creatures, and that’s before adding in one of them is a thousand-year-old royal in charge of the dragons of San DeLain.

Sometimes it’s better not to question the dragon gods.
But things aren’t always as they appear. Danger stalks the streets of San DeLain in the form of an old enemy once thought dead. What’s real? What isn’t? As Kit struggles with a nightmare from his past, Hudson and Connie try to figure out how to keep their very breakable human in one-piece and happy. Fate is a tricky, tricky thing, and sometimes?
Well, sometimes Hudson has just gotta trust the dragon gods as the darkness edges closer.