Hired By the Enemy by Jax Calder

Liam
I’ve landed my first big assignment with Elite, and it has the potential to be a financial game-changer, so I’m determined not to screw it up. All I have to do is pretend to be a wealthy CEO’s boyfriend on a sun-kissed tropical island for a week. How hard can that be?
Unfortunately, I’m met at the airport by an unexpected blast from my past: Matthew O’Conner. The nerd who lived next door to me growing up—also known as my lifelong nemesis.
This job just got a whole lot more complicated.

Matthew
My blood runs cold when I spot Liam sauntering through the airport doors. Of all the people in the world to show up to be my fake boyfriend for a week, why did it have to be Liam Jamieson? Mr. All-American Charm. The jock with a smile that melts everyone—except me. We’ve been at odds since childhood, trapped in an endless cycle of pranks and one-upmanship.
And now we have to pretend we’re in love? This is going to be a complete disaster.
Or is it?
It turns out Liam and I have both grown up since high school. And maybe, just maybe, we never actually knew each other to begin with.