Hoping for Her by S.A. Clayton

Drew Mitchell has spent the past ten years rebuilding his image, leaving behind the bullied kid he was back in high school. But when he comes home one night to find a note from his new neighbor, warning of some construction noise, he comes face to face with his worst nightmare.
Katie Murray.
The Queen B*tch.
The girl who made his life hell for four years is now living next door, infiltrating the walls he’s expertly crafted to keep women like her out. But when he finds out why she’s really home, everything he thought he knew about her begins to shift, and starts to wonder if maybe appearances can be deceiving, and she’s not the person he thought she was.