Twenty-five-year-old Ryke Meadows knows he's hard to love. With a billion-dollar inheritance, a track-star resume, and an alpha-male personality—he redefines the term likable-asshole. But he's not living to make friends. Or enemies. He just wants to free climb three of the toughest mountains in Yosemite without drama or interruption. And then he receives a distressed call from a girl in Paris.

No one would suspect shy Lily Calloway's biggest secret. While everyone is dancing at college bars, Lily stays in the bathroom. To get laid. Her compulsion leads her to one-night stands, steamy hookups and events she shamefully regrets. The only person who knows her secret happens to have one of his own.

Rose Calloway thought she had everything under control. At 23, she's a Princeton graduate, an Academic Bowl champion, a fashion designer, and the daughter of a Fortune 500 mogul. But with a sex addict as a sister and roommate, nothing comes easy. After accepting help from a producer, Rose agrees to have her life filmed for a reality television show.

Prepare for the worst, but hope for the best. That's what Lily Calloway and Loren Hale try to do when his father schedules an important meeting. The problem: after being swept into the public eye and battling their addictions, they're not sure what the worst is anymore. In a sea of many changes—including Ryke and Daisy living with them—Lily realizes that the best part of her fluctuating hormones might just be the worst. Her sex drive is out of control.

When fake rumors spread like wildfire—like having three-ways with her boyfriend's rock climbing brother—Lily Calloway retreats to a dark place: her bedroom. Loren Hale is more determined to keep their sex life private, even from their friends, and he helps Lily in the only way he knows how. But how much love is too much? Their lives are filmed, watched, and criticized. And through it all, Lily and Loren have to face enemies they never thought they'd see, demons they don't know if they should bury, and setbacks they didn't think they'd meet. Not this soon.