Cross Your Heart // R.A.B.

Many a pureblood has been forced to marry for blood rather than for love. It isn't a new system. In fact, with the Sacred 28 dying out, every child which comes of age is made to marry by their parents. Carrying on the pureblood line is of the utmost importance.
And who better to do it with than a man she's never gotten along with once in her life
Her brother is to carry on the family name. She is to carry on the family genes.
Magdelyna Merope Gaunt, daughter of Morphin Gaunt and cousin of Tom Marvolo Riddle Himself. She doesn't believe in love at all, but who could blame her? She is one of two living Gaunts, secondary heir to the fortune of Salazar Slytherin.
Regulus black, the new heir to the most Noble House of Black, was never expecting the partner he was assigned. Partially because of who she is to he and his friends, though mostly because she's the one and only slytherin that has ever accomplished many of the things she's accomplished.
And who better to do it with than a man she's never gotten along with once in her life

{1978-1998}
Regulus Black x OFC
MATURE BOOK!
Cross-Posted on Ao3 under the same name