Partners in crime : a novel / Alisha Rai.

Enhanced descriptions from Syndetics:

Indian Matchmaking meets Date Night in this fun, romantic adventure by Alisha Rai -- "One of the very brightest romance writers working right now." (Entertainment Weekly)

Mira Patel's got a solid accounting career, good friends, and a whole lot of distance between her and her dysfunctional family. All that's missing is a stable romantic relationship. Armed with a spreadsheet and professional help, she sets out to find her partner in only legal activities, but much to her matchmaker's dismay, no one is quite right.

Including Naveen Desai, the very first match she unceremoniously rejected.

Lately Naveen's been too focused on keeping his sick grandfather's law firm afloat to think about love, and he's stunned when Mira walks back into his life to settle her aunt's affairs. He's determined to keep things professional...though it's impossible not to be intrigued by all of the secrets piling up around Mira.

If getting back together with an ex is a bad idea, getting kidnapped with one is even worse.

Suddenly, Naveen and Mira find themselves in a mad dash through Las Vegas to escape jewel thieves, evade crime bosses, and follow the clues to untangle the mess her family left behind. As her past comes back to haunt her, Mira despairs of ever finding someone who might understand her...but maybe, over the course of one wild night, she'll find that he's right by her side.