TripleMate (Isherwood Pack #3)

Alpha Dragos Lupescu is an enforcer to the werewolf king and on a mission to capture a tyrannical alpha accused of many crimes, including murder. Along with his boyfriend Aurelius Conti, an Italian elenkti able to control the emotions of his fellow werewolves, they're back in Isherwood. Neither are prepared when it looks like their duo is about to become a trio.
Journalist Ryan Seeley is in Isherwood after his homophobic father had a heart attack, and he jumps at the chance to investigate the violence happening in the nearby ghost town. He has no idea why he's so incredibly attracted to a beast who sounds like Dracula and a little beauty with soulful eyes, but it's compromising his work and his sanity.
And then they go and tell him they're werewolves and he's their fated mate, the one person meant to be theirs.
With Dragos compromised by his instincts to protect his mates, Aurel exhausted from trying to keep everyone calm, and Ryan caught up in the middle, the violence arrives at their doorstep. Now the three of them must come together with their allies to recover a weapon that could expose them all while also desperately trying to stop a massacre.

Gay Werewolf Shifter Romance.