2.5
adventurous emotional tense fast-paced
Plot or Character Driven: Plot
Strong character development: No
Loveable characters: Complicated
Diverse cast of characters: Yes
Flaws of characters a main focus: Yes

Reading this book felt like reading fanfiction about characters I had never heard of before. Mackenzie Lee leaned hard on tropes to tell you who the characters are, which for me made for boring and flat characters, but again might work for fanfic lovers. If you love reading fanfiction, you will love this prose.
If you can't already tell, I don't love fanfiction. This book fell incredibly flat for me, which was disappointing considering I've had it on my tbr for at least 3 year now. Part of this is certainly due to the fact that I've grown out of most YA. However, I really wanted to like this book! Two eighteen year olds (only a year away from my age!) falling in gay love while traveling Europe? What's not to love! 
Sadly, as before mentioned, Lee just didn't manage to give the main characters interesting depth. The plot was a series of happenstance events which individually could  have been fun, but strung together were aggravating in their implausibility. I can think of so many ways that this book could have been great without the convoluted steal and return plot, but those would have required a depth of character and relationships that this book lacked.
With all this being said, the ending was cute. I can see why someone less overly-critical than me would love this.