This is book #3, in the Platonically Complicated series. This book can be read as a standalone novel. To avoid spoilers, and to fully understand the series, I recommend reading these in order.
Lucas finds himself attracted to his best friend's sister. He tries to hold out, since she is also his friend, but the thoughts just get more frequent and more dangerous. When a mutual friend to them both suggests they get together, even fake, he has no idea what he is in for.
Kate is wishing she could go back in time. To a place when she had no feelings for her brother's best friend. Lucas intrigues her. He also heats her up when he touches her anywhere.
Such a great series and this is a great addition! The characters banter literally makes me laugh out loud. I loved the friends and families and how close they are. I also loved what a great father the leading man in this story is. Such a joy to read! I give this book 5/5 Kitty's Paws UP!