His Demand (Dirtier Duet #1)
Lisa Renee Jones

Then she walks into his office and back into his life, and he has to have her. It doesn't matter that she's the kind of woman you marry. It doesn't matter that she's everything he avoids because she's everything he wants.
Only Abbie isn't the good girl she seems. She has secrets and a past and soon, she'll pull Gabe into her bed, her life, and that spells more than obsession. It spells danger.
Book one in the Dirtier Duet.