Fated By Starlight by Krista Street

Avery:
Half-witch, a quarter-werewolf and barely passable at either.
Still, there’s an upside to my lacking abilities. I’ll be an excellent supernatural ambassador if I can survive three months of high-intensity training. I expected it to be rough and sweaty, but I didn’t expect my commander to wear a face from the past.
Wyatt’s my former teenage crush, and he’s even more delicious than before. But as my superior he’s forbidden fruit, so I can’t let his distracting presence deter me. No matter how much I yearn for a taste.

Wyatt:
Squad Commander. Pureblooded werewolf. Alpha.
My responsibilities weigh on me daily, and I’m more crushed than ever under that weight. Because my new recruit isn’t the shy, awkward girl I once knew. Avery’s become a luscious temptation that duty demands I resist.
One glorious night under the stars, my willpower slips, but no matter how much I want her, I can’t let it happen again. So I reject her, and I’m prepared for her hatred until a rare celestial event changes everything.
Now fate demands that I choose between Avery and duty. Little do I know, that decision is only the beginning…