Summer in the City by Alex Aster

 Elle is a screenwriter in LA who has kept her identity secret for her own reasons. Parker is a San Francisco billionaire businessman temporarily living in NYC. One night at a club in NYC they meet and kiss and things seem to be going well until he implies that he could buy her, which rubs this very independent woman the wrong way. She uses her anger at him to fuel her writing. Then she gets hired to write a screenplay set in NY and the movie company wants her to spend the summer in NYC so she can get all the details accurate. Ever since that night in the club, she has hated NYC, but moves back for the summer when her sister offers her apartment, which is under renovation, if she'll supervise the renovations. Imagine her dismay to discover that Parker lives on the same floor. He doesn't seem to remember her but talks her into being his pretend girlfriend because he's in the middle of a big merger and he wants to take attention away from the merger. She wants to say no but realizes that her anger at him is the only thing that can get her past the writer's block she is experiencing on her NY screenplay. And so begins their summer of fake dating that, no surprise, begins to turn real for both of them. But can it last beyond Labor Day?

It's a good story--and indeed it kind of made me want to go to New York and spend some time there. I do love Elle's best friend, Penelope, who is back in LA supervising the fake romance from a distance. And providing wardrobe advice for all the events Elle and Parker have to go to.