Isabel has one rule: no dating.

All the women in her family are heartbreakers, and she's destined to become one, too, if she's not careful. But when she goes to the hospital for her RA infusion, she meets a gorgeous, foul-mouthed boy who has her rethinking the no-dating rule and ready to risk everything.

Aleksander is chronically ill, too, and there's a softer side underneath all his jokes. Isabel finds herself unraveling the secrets of a real person, rather than crowd-sourcing her decisions through her online column Sick Girl Wants to Know.

They fall for each other hard and fast, but Isabel has known all along they were headed for disaster. When a devastating family secret threatens their love, can she find the strength to claim a brave new life with Aleksander, or will she retreat to the safety she’s always depended on and break his heart?