"Just one rule" is book four in the Plumas universe series, a contemporary romance series. It can be read as a standalone, I haven't read all the previous books and didn't feel lost at all. There are cameos but each book focuses on a different couple and the characters from the previous books are fleshed out side characters with their backstories explained.
In this book we follow Erika and Eli. Eli's uncle kicks them out and Eli goes to Erika for help. The two of them have always been close but when they start living together their relationship evolves. I'm not very familiar with their type of dynamic but I loved their chemistry and I thought that they were absolutely amazing together. I loved how well they communicated and I loved how they took care of each other. I also really liked that the author gave emphasis on the importance of therapy.
I felt very connected with both main characters but I related with Erika a little bit more. She's the type of person that always takes care of all of her friends and sometimes forgets to take care of herself. Lucky for her, her friends group is the best and took care of her when she needed it.
It was a very well written book, the characters were deep and interesting and grew a lot and I adored the romance. It warned my heart to see Erika and Eli fall in love and get their happily ever after.
I can't wait to read more books in the series.