The Six Rules of Maybe — Deb Caletti

Scarlet spends most of her time worrying about other people. Some are her friends, others are practically strangers, and then there are the ones no else even notices. Trying to fix their lives comes naturally to her. And pushing her own needs to the side is part of the deal. So when her older sister comes home unexpectedly married and pregnant, Scarlet has a new person to worry about. But all of her good intentions are shattered when the unthinkable happens: she falls for her sister's husband. For the first time in a long time, Scarlet's not fixing a problem, she's at the center of one. And ignoring her feelings doesn't seem to be an option...