Madelyn is one of those super smart people who get the chance to go to college earlier, skip grades and whatnot. She feels like she can never be as good as her brother, who's going to one of those well-known universities. Her father is always pushing her to do better and Madelyn is not so happy about it. Everything changes when she meets Bennet, her bio professor.
Bennet thinks Madelyn is a 19 year-old college student. They fall in love but he doesn't take any actions until the class he's teaching her ends. Madelyn has never been in love before Bennet and she doesn't tell him she's only sixteen. I liked Bennet more than Madelyn because even if it was wrong for a student to date a teacher, he did do the right thing and waited until they no longer were in that position while Madelyn kept lying. The reason I didn't like her is that she's clearly smart and yet she was stupid enough to think that kind of relationship would ever work.
The Truth About You and Me reminds me of one of my all-time favorite books - Drowning Instinct by Ilsa J. Bick. It's another book about teacher-student relationship, Sadly, it wasn't as good as Bick's. While Bick wrote a book which seemed more mature, Grace's appeared still too childish.