I had the privilege of reading and ARC copy of Step Boss, by Ash Harlow.

Marcus had a one-night stand months ago, he then moves to the home office of his family business and walks into the lunchroom and she is standing there. He then finds out not only she is his PA, but his father married her mother so she is his stepsister. Carley can't believe who just walked into the lunchroom, she recognizes him right away and learns at the same time that he is her boss and her stepbrother. If only they could both forget their night at the bonfire life would be so much easier, but neither of them can let it go. They need to hide their relationship from the office and their parents who are holding their pasts against them. But after working together and finding corruption happening in the company they both work at, their worlds start to fall apart. But even the threat from your parents can't stop the feelings they have for each other.

Great book with and amazing HEA.