Flashpoint

I always get what I want. 

He's the ruthless patrón of the Guzman cartel... she's a nerdy, naïve software analyst, nursing a broken heart, poolside in Ensenada.
Their paths should have never crossed, but once they did, Ramon Guzman decided he's keeping his sweet American nerd. One way or another.
Even if that means he has to trick her into marrying him. 

Flashpoint is Book Four in the Agents of Ensenada series. It is a standalone, with a guaranteed HEA and no cliffhangers.