The Fallback by Mariah Dietz

Breaking up is hard to do.
It’s even harder when you’re not expecting it.
Brooke Jensen is a planner. Not only in her personal life but also professionally as one of the most sought after event planners in Chicago.
But, when the ideal life she built for herself, complete with handsome, long-term boyfriend and perfect apartment crumbles, she realizes there are some things you just can’t plan for.
While trying to start anew from her best friend’s guest room and discovering the best doughnuts in the city, an idea sparks to life when she meets Levi. He’s intriguing, funny, and shockingly good-looking, and what had been a few stray thoughts becomes a new passion for Brooke, a blog detailing learning how to be single. The project introduces Brooke to new people and experiences, and keeps returning her back to Levi.
But, Brooke learns kismet may have been wrong when she learns Levi is the last person she should be interested in.
Falling for the wrong guy once has Brooke hesitant to start a new relationship, but Levi is quickly proving that The Fallback might be even better.