Blood Oath by A.T. Brennan

A witch, a human, and a werewolf. Three men connected by love, but two of them have never met, until now.

After losing his family and coven six years ago, Felix was finally happy again. He has a job he‘s good at, two boyfriends who love him, friends, and a place to call home. That is, until a mysterious stranger brings a job into the Assassins Guild where he and his lover, Ryder, work.
On paper the job is simple, take out the sorcerer who heads the most powerful dark magic church in the country. But magic is never simple, and Ryder and Felix enlist the help of a ragtag group of unlikely heroes, including Felix’s other boyfriend Luka, to complete the job before time runs out.

Will Luka and Ryder see what Felix has always suspected? And more importantly, will they be able to accept it, and each other?