Alex is quite a naive and innocent character, so seeing him learn how to understand and read Chris is absolutely adorable. Despite being an ex-con, Alex isn't a tough guy, despite how he looks and his passion for boxing. He's a genuinely nice guy who suffered some bad luck and made some bad choices.
The book differs from the others in the series in a few small ways. First off, Chris is the first MC who isn't a drug addict, fighting their addiction. Instead, they have other issues to battle. Secondly, Chris and Alex don't have sex with each other for a long time. Not until the last 20% of the book. This is important for their growth, both as individuals and within their relationship. I love that their bond was more emotional and heartfelt, to begin with. For that reason, the book was a little less angsty than before, with a more positive outlook for a lot of the book. Even though Alex had depression and the side effect of erectile issues, and Chris had a complicated history of constantly being stepped on, they were both generally positive people trying to move beyond their past.
As well as getting to see a dual POV between Chris and Alex that is pretty evenly divided, there are some events that demanded more. So, we get about a chapter that is divided between Dex and Liam's POV, as well as a switch to 1st person, for some flashback scenes. These are both very important, and I loved that Zukowski made the conscious decision to include them. Some authors add extra POV's that end up useless or unnecessary, while some don't add them when they are important. This time, they were both important and completely necessary.
“You are fine as you are.