Her Favorite Rival (Harlequin LP Superromance) - Sarah Mayberry

She has a horrible time with her parents and decides to run off and do something she considers impulsive and reckless. So, she's the same idiot she was at 16? Even though she keeps lamenting her dumbass actions back then.

 

Also, I don't get why they've made anything happening between them so high stakes. They sound more like they're cheating on spouses rather than just work colleagues.