Her Favorite Rebound - Cider Bar Sisters, #4

She's got a billionaire boyfriend, but life is far from perfect. Thirty-four and divorced, Sierra Wu is a constant disappointment to her family. They approved of her former career as an engineer but were horrified when she quit to run a small greeting card store. So, the last thing she expected in her not-so-spectacular life was being swept off her feet by Colton Sanders. Yes, that Colton Sanders, the billionaire.
They've been together for a year, and despite his reputation with women, it's going well. There's only one tiny problem: Jake Tong. A former friend and employee of Colton, the irritatingly handsome Jake tells Sierra to break up with Colton for her own good. She refuses, of course. Why should she trust Jake? But as she continues to bump into Jake in awkward situations, the attraction between them grows, and she starts wondering if he's right about Colton.