Theodore Nott lived an unhappy life, but his life was much brighter with Briar Rose at his side. Rose was everything Theo was not, happy and loud and muggleborn."Two households, both alike in dignity. In dark Hogwarts, where we lay our scene. From ancient grudge break to new mutiny, where civil blood makes civil hands unclean..." From Forgotten Truths of Elizabeth Remington

During the war, he locked her in a broom closet to keep her safe. Two years later, she's been living in the muggle world, until she gets a strange owl from one Lucius Malfoy attached to an invitation to an engagement celebration. He is to be married, as is she. Yet, their feelings keep them drawn together. Time has changed her, but it has only made him even more cold. Draco/OC