Until the End of the World - Sarah Lyons Fleming

★Named one of BookBub's 14 Can't-Miss Zombie Series★ ★One of Popsugar's 68 Books to Read While Social Distancing★ Cities fall. Worlds end. Zombies never die.
Join a group of friends on a journey that takes them to places they never imagined.
Cassie Forrest isn't surprised to learn that the day she's decided to get her life together is also the day the world ends. After all, she's been on a self-imposed losing streak since her survivalist parents died: she stopped painting, broke off her engagement to Adrian, and dated a real jerk. Self-improvement can wait, however. First, Cassie and her friends must escape Brooklyn before they turn into zombies, too.
This is difficult enough, but Cassie's ex-boyfriend and a friend's bratty sister make everything-apocalypse included-more unpleasant. When the two attract a deadly threat to their safe haven, Cassie's forced to see how far she'll go to protect those she loves-and it's further than she anticipated. Between this, her past mistakes, and the living dead, that losing streak shows no sign of letting up.
Survival's great and all, especially when you have leather armor, good friends, and home-brewed beer. But there's something Cassie must do besides survive: tell Adrian she still loves him. And to do that, Cassie must find faith that she's stronger than she thinks, she's still a crack shot, and true love never dies.
The Until the End of the World series:
Until the End of the World (book 1)
So Long, Lollipops (Book 1.5)
And After (Book 2)
All the Stars in the Sky (Book 3)
The City Series:
Mordacious (Book 1)
Peripeteia (Book 2)
Instauration (Book 3)
The Cascadia Series:
World Departed (Book 1)
World Between (Book 2)