All I Want for Christmas

Here goes the worst book I've read this year.
Maybe I need to elaborate a bit. This book belongs to the pile of plays with cartoon characters. There was more plot in my childhood games (we also had competitions, concerts and relationships but with more thought out drama).

The first and foremost problem is the Relationship. Like how was it supposed to work? So they met, have some animosity between each other, they say something good to each other and next minute they are arguing and the man takes off. By the end on the month (which is like 9 chapters out of twenty something) they are in love for real, not just pretending. How? What? Whyy?
At some point mentions of their on-stage chemistry started making my eye twitch. And here I have the same questions. What chemistry? Show it to me. At least once. But no. There is only vague descriptions of how great they are on stage together and how they drive the people crazy. Tell you what - I didn't feel an ounce of that chemistry.

I have so many questions for the boyfriend. You don't want to anything like your father, but you literally choose the same career. And all your personality is “I don't want to be my father”? Thank god we will see that you are so much more. But the problem is that we don't see. This guy is irrational, not asking anything, just jumping to conclusions and running away.

They known each other for less than a months, then he ghosted her for eleven and a half months. His love's career kinda depended on him and he just left? What exactly did he left for? I so don't see what that girl has seen in him. From the moment she met him he gave her a bunch of promises and then literally did something else (like not proposing in the finale of their show how they both agreed to. He didn't even try to give her a heads up or explain afterwards why he didn't do it). And did I mention that he just left to spend 11 months in Canada not answering any calls or messages?
He even gets offended that the girl didn't tell him her grandmother died. YOU'VE GHOSTED HER FOR A YEAR! An here I don't even mention that they were contractually obligated to record an album together and make special song for some Christmas show. What love are we talking about here if he was going to leave her with a great financial debt if they didn't play their song? That how much he cared? That how much he loved her? Somehow that makes it hard for me to believe in their “chemistry”.