Waging War by Julie Trettel

Mistaken for a shifter, superhuman, Jake Forrester found himself amid a paranormal world. Shifters had physical advantages over him, but he stubbornly worked even harder, pushing himself to the max to prove himself time and time again. At last he’s landed his dream job as the newest member of Bravo unit.
Unlike his shifter cohorts, he doesn’t have some magical juju to tell him when he’s found “the one” but when he sees Alaina for the first time, his heart tells him all he needs to know.
The problem is, she’s off limits and following his heart could destroy alliances and wage a war they aren’t prepared to fight.