Steel Hearts by Jason Collins

AIDEN:

Lying is part of my job. Falling in love with a criminal isn’t.
I’ve finally landed the undercover assignment I’ve always wanted: taking down the local Mafia branch from the inside. Then I meet Chris, my sharp-talking, gorgeous mentor. The don assigned us a high-stakes heist on a jewelry store, and that means a lot of time together. Bad, bad idea.
I’m already falling hard for him—and now I have to ruin his life. When the heist falls apart thanks to yours truly, Chris is arrested along with the rest of the local Mafia. That’s when the surprise comes: he isn’t what he seems. Soon we’re in the sights of a wrathful Mafia don, and Chris and I have to learn to trust each other if we’re going to survive.

CHRIS:

Rule #1 in the Mafia: Don’t fall in love with another associate. But I’ve been breaking rules for a long time.
My life has always been all work, no play. It rocketed me to the top in the Mafia—and doomed my marriage to my ex-wife. Now that Aiden’s been placed under my care, I wonder if she and I were always destined to fail.
Every time I’m with Aiden, I can’t help myself. We’ve been tasked with pulling off a heist together, but it feels like I’ll go crazy if I don’t touch him. When the local cops get wind of our plans, things get even more complicated. I’m not what I seem, and I’ve been lying to everyone—including Aiden.

**This is the first book in the Brothers in Blue series. It can be read as a standalone with no cliffhanger. **