Billionaire Bully - The Bailey Brothers, #1

Jett Bailey had been a bully in school. No one knew that was because he was being molested by a family friend. He left and when he came back, he was a stronger man. When he runs into the girl he bullied the most, he starts to make amends. He has no way of knowing just how important she'll become. Olivia Hope had hated school. She'd been miserable and bullied by one of the rich kids. Years later she's a nurse, but being downsized.
When her bully comes back to town looking for an employee, her mom convinces her to try it. She has all sorts of ideas of how it will go. She never guessed she'd fall in love with him.