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The best word I can think of for this book is likeable: the couple, the situation, the secondary characters.
Gabriel and Courtney give a talk at the high school career day. Courtney's daughter Ava goes to the matchmaking company where Gabriel works and tries to sign up her mother. As a result, Gabriel and Courtney start fake dating.
The daughter Ava is so relatable and she needs her own book when she grows up.