I did enjoy this book. The plot was very unique and moved at a great pace. I loved hanging out with these characters. I just didn't love the writing style. It felt a little too screen writing and not enough like a novel. It was the same reason I don't care for Emily Henry's books. They feel like they are only written to become the next Netflix hit. 
I'm also surprised the editor didn't make the author remove the use of "tattoo of his heartbeat" about 3 times. The fact that it appeared in the books 4 times (or more if I missed one) is outrageous.
I did really love the look into Helen and Grant's jobs. I would love to have that job if it didn't mean living in LA, so I really appreciated how much detail the author went into the scenes surrounding their jobs.