Falling inlove with someone who only sees you as a friend is hard, but we never realized that falling inlove with someone who only sees you as a sister/sibling is the hardest. Charlotte Elliston, step-sister of Louis Tomlinson, finds herself in the worst possible position-and person- to fall inlove with. Her only choice is to back off and set feelings aside, or to stay true to what she feels and ruin her father's marriage. So what will it be?