I'm going to review this as I go.

My problem with this book is an extension of the previous book. The timeline and pacing do not go together.

“I hate this,” I whisper, horrified at the tremble in my voice. “I hate this so much. I hate that it keeps happening. I hate what it does to me,” I say. “I hate it.”

Ella says this TWO days after getting back her memories. Night #1 was Aaron's birthday. And Night #2 is this. It's like the author is deliberately making the protagonists younger. I have no clue what purpose that serves.

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Adam and James and Lena and Valentina and Nicolás...

I don't understand what purpose such writing serves.
Why can't it be written like this: Adam, James, Lena, Valentina, and Nicolás...?

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I took so many breaks while reading this book, that it's conclusive that it's getting boring.

So much of this book is from a third POV that it's incredibly boring.
Aaron is fighting, do we get Aaron's thoughts on it? No, we get Kenji.
Juliette is kidnapped, do we get her thoughts? No, that chunk of the story is just missing.

There are five pages dedicated to different people simply asking Kenji to talk to Aaron.
There are ten pages dedicated to reminding us that Aaron is in a dark place.
Ten more criticizing that he is in a dark place. His fiancee is in a coma, give him a break maybe?

The characters definitely show their age. Unfortunately for us, the meager few adults also act like teenagers.

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If I have to read another page of Juliette simping over Paris Anderson, I am going to lose it.

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So much wasted potential. So many wasted characters.
This book was 100pages too long.