It is recommended that you read “Heaven Hill Generations” before starting this series, or you will be spoiled and lost! The heart wants what it wants.... Harley Walker Guilt. I face it every single day when I look at my twin sister. Everyone thinks I'm thriving, but no one knows the feelings I face when I'm alone. Well, that's not exactly true. One person does. But if we're ever caught, we're screwed. Things changed when I was ten. On my sixteenth birthday though? Things exploded, especially my heart.