This is Corbin's book and is hmm a 2nd chance at love/enemy-to-lover even if Corbin is unaware at first.

The term "CB" is perfect and I don't want to spoil so want post exactly what it is in case

Corbin and Spencer are so sweet together and I loved how they didn't seem to know they were boyfriends just thinking they were CB's...

This was 4 star only for me because I understand this is last book in series but it didn't feel quite finished - felt like we need another book with all the couples - like an extended epilogue