As far as romance as a whole genre goes, this book is great, but as far as Emily Henry's collection of works goes, this book is mid. The characters have personality traits that I personally find annoying or cannot relate to, so I am not as invested in their stories. I don't know how to explain it, but I can't suspend my rational thinking and believe these two will be together forever and ride off into the sunset. 
All of the characters are written beautifully and have unique and distinct personalities, even if they only play small roles in the story. 
I think I want romance books to commit harder to the whole fake dating thing, and that's my personal preference.