The Vampire’s Werewolf Bodyguard by Tavia Lark

Adapted from a novella originally published as The Vampire’s Werewolf Bodyguard by Liv Rider.
Simon doesn’t want protection. Especially not from a werewolf.
Too bad the reclusive vampire doesn’t have a choice. Simon barely survived an assassin’s strike, and he isn’t safe yet. The attack left him weak and vulnerable, which is why his meddling sire hires him a bodyguard.
A big, burly werewolf bodyguard.
Cody’s instincts make him a formidable guard—if he can control his wolf. Living without a pack or mate makes him unstable. Dangerous. After accidentally shifting on his previous assignment, he has one chance to prove himself:
Protecting a bratty vampire who does not want his protection.
Keeping things professional is Cody’s only hope. Simon may have four centuries’ worth of defensive habits, but Cody can handle difficult clients. Except as Cody digs up the hurt behind Simon’s prickly exterior, and Simon starts to enjoy being cared for…
Staying professional might be impossible. Just like controlling Cody’s wolf.