Hidden Currents by Jerry Cole

Jason likes to think he’s outdoorsy. He hikes, he runs, he makes bad decisions on mountain bikes with his best friend. If he weren’t stuck in his office job with his insane boss and his busy schedule, he might even have time to go camping.
But when his boss gets involved in a high-publicity scandal and needs to spend some time away from civilization, Jason thinks he might be in over his head. Not only do he and his coworkers get dragged away into the heart of the Alaskan backcountry, but they’re also stuck with a gruff hunk of a fishing guide who is dangerously handsome and lamentably straight. Jason’s been unlucky enough in love, and this new unreciprocated crush just makes him miserable.

Nick isn’t exactly ecstatic to be working with Jason and his colleagues, either. The company’s CEO is a handful at the best of times, and one of his fellow guides winds up fueling his ego and his dangerous hijinks. To make matters even more stressful, he develops a fixation he can’t explain with the CEO’s gay assistant.
As the two work together to corral Jason’s boss, they find that they have a lot in common. Nick isn’t interested in men, but with Jason he just might make an exception. It doesn’t take long for things to get hot and heavy, and Nick is confronted with desires he’s never thought about and doesn’t want to explain to himself.