The Cheat Sheet by Sarah Adams

 Quarterback Nathan and ballerina Bree have been in love with each other since high school. But neither of them knows it. They're best friends and neither wants to jeopardize that by going outside the friend zone. Then Nathan decides to test the waters. He asks his teammates for romantic advice and they come up with the Cheat Sheet of smooth romantic moves that he's going to try on Bree to see if she secretly thinks of him as more than a friend. The result is sweet and hilarious, as the two best friends inch closer and closer to the inevitable.