Laura spent the beginning of her life being physically and sexually abused. Dean has lost almost everyone he has ever cared about. Together they'll learn to love again. And protect each other from their pasts.
After your Dad was killed, you were shocked to learn all about his hidden life. Deciding to follow in his footsteps, you turn to a life of hunting, surprised at how well you adapted. Then comes along Sam and Dean Winchester, turning your life upside down. You and Dean don't get along at first, but then things soon start to change.
Suggested by @Alleygirl678.