When Sparks Fly — Lauren Fox

Darla was born poor but used her intelligence and determination to get scholarships, an MBA and a job at a prestigious company. But her one problem is her new boss. Chad Taylor. He's just as smart as she is, sarcastic, detailed and rude-but she can't stop thinking about him. Chad has a reputation as a ladies man but they Darla soon finds out they are just rumors. Until the sparks between them begin to fly. The attraction between them soon begins to effect their work and they must decide whether or not to consummate their desires or risk losing everything.