Dragonfly by Leigh Talbert Moore

Anna Sanders expected an anonymous (and uneventful) senior year until she crossed paths with rich-and-sexy Jack Kyser and his twin sister Lucy.

Publisher Description

Pulling Anna into their extravagant lifestyle on the Gulf Coast, Lucy pushed Anna outside her comfort zone, and Jack showed her feelings she’d never experienced… Until he mysteriously withdrew.

Anna turned to her internship at the city paper and to her old attraction for Julian, a handsome local artist and rising star, for distraction. But both led to her discovery of a decades-old secret closely guarded by the twins’ distant, single father.

A secret that could permanently change all their lives.