Book excerpt: Makayla Stevens has blossomed since high school, but one thing hasn't changed: Kenyon Blake still turns her knees to jelly. Back then, she had thick glasses and braces, and he was a gorgeous football star. Now he's the uncle of one of her students, and he's made it plain he'd like to get to know her outside the classroom. The reality is even hotter than her teenage fantasies, but getting involved with a student's relative could mess with her career, and her peace of mind. Kenyon's not giving up, not before teaching Makayla a few things—about long, slow kisses, sizzling passion and listening to your heart.…