One Hot December by Tiffany Reisz

Welder Veronica 'Flash' Redding's playful sense of evil sometimes gets the better of her. Like when her insanely handsome, suited–up boss gave her the most wicked night of her life, then dumped her… revenge is a dish best served hot.

Only Ian Asher isn't letting Flash get away so easily – he hasn't forgotten the intensity between them. The searing heat when they touch. Now he has only the holidays to convince Flash that they belong together...and that even the most exquisite, broken things can be welded back together.