The Fake Boyfriend by Jason Collins

ANSON:

My fake boyfriend has a mystery of his own.
When my dad shows up to the bar I run, he drops a bombshell: my billionaire grandfather wants an heir. My dad invites me on a family trip to show them the real me, but I’m not going without a confidante. That’s exactly what I find in Matthew, the mystery writer from the dating app Matched.
I thought we’d just have a little fun, but when my story gets his attention, I offer him a deal: pretend to be my boyfriend—and keep me sane—on this family trip, and he can use me for a story. It seems like the perfect plan, until I realize I don’t want to pretend. But when we grow close, he starts to pull back, and soon I’m sensing that the fake relationship isn’t the only mystery between us.
I can’t believe I’m going to have my real heart broken by my fake boyfriend.

MATTHEW:

The only relationship I have time for is the one between me and my deadlines.
My typical day involves going undercover, showing the world how the rich live in private, and finding the next lead. I’m an investigative journalist, so I should be hunting for my next scoop, not swiping for men on dating apps. But when I meet Anson on Matched, I realize I might have landed both.
He’s funny, charming, and handsome as hell. I’m already wondering if he’s too good to be true when he offers me the chance of a lifetime. Being his fake boyfriend will provide me with a story that could make my career. But the closer I get, the guiltier I feel. He thinks I’m a mystery writer, and coming clean could risk it all, but I’m on a deadline to decide whether our spark is strong enough to risk my job.
I don’t know how to choose between the man of my dreams or the career of my dreams.

This is the second book in the Matchmakers series. It can be read as a standalone with no cliffhanger.