The book is a fascinating concept, the idea what your genes are part of the reason why you get on so well with people. This books has elements of enemies to lovers as well as fake dating trope. I loved all of Jess's friends and family: her 7 year old daughter Juno, her friend Fizzy, her grandparents who helped raise her due to her absent mother. I didn't know Jess was a single mother when I started the book, so I was a bit apprehensive about whether I would enjoy that part of the storyline but I did like it, it added another dimension to the story.As with most romance stories, towards the end there is an element that threatens the stability of the relationship and I was so pleased that it wasn't too forced or drawn out. find too often that romance books depend on miscommunication as part of the tension and it can be really frustrating. Whereas in this book it wasn't too laboured. I thought the book was charming and cute, I liked Jess and River together and once I got into the book I flew through it in less than 24 hours!