An enemies-to-lovers military office romance

Zach
I'm good at my job and keeping people away. When I finally notice the shy woman who's been right in front of me, I realize it's time to drop the act (and the swooshy hair). I'm making up for lost time and claiming her now. Emily might need some convincing, given my carefully crafted asshole reputation. But I've got the old ladies as my wingwomen so what could possibly go wrong?

Emily
He's an absolute jerk at the office. But on rare occasions, he's downright sweet, usually to the little old ladies that live in our building. It's only because I can't figure him out that I can't stop thinking about him. That, and he's gorgeous (do not tell him I said that!)

Despite me turning him down, Zach's suddenly telling the world we're together. It's surprisingly hard to kick him out of my life. And maybe the real Zach is worth keeping?

Zach is a steamy safe romance with a nerdy girl, a hero in disguise, and an HEA.