"After school one day, Frankie, a lover of physics and astronomy, has her first sexual experience with quiet and gorgeous Benjamin--and gets her period. It's only blood, they agree. But soon a gruesome meme goes viral, turning an intimate, affectionate afternoon into something sordid, mortifying, and damaging. In the time it takes to swipe a screen, Frankie's universe implodes. Who can she trust? Not Harriet, her suddenly cruel best friend, and certainly...