I Can't Tell You is about a guy named Jake who gets into a fight with his high school friend and now college roommate Sean over a girl. So after this fight Jake decides that talking leads to trouble and decides to stop taking and communicate by writing. Through napkins, placemats, receipts, dry-erase boards, post-it notes, calculators, e-mail, pudding, scotch tape, snow, and even toothpaste Jake finds new ways to express himself. There are also notes he never sends to his friend Xandra. Notes saying that he loves her and wants to be with her. After she starts seeing a guy Jake and Xandra pranked called one night, he burns the letters he wrote to her. That then leads to Xandra and Jake revealing their true fealings for each other, and it leads to a falling out between them. They are still friends, but not as close as they were since Xandra knows that Jake has feelings for her. Also, Xandra is dating some one else, which complicates things quite a bit. The last few pages of the book sum things up nicely. It is a quick read and was enjoyable to read.