Lucius curses Harry and Draco to a forced marriage. But they're not required to be with each other, only live together, so both pursue other relationships. As time passes, however, things change. HPDM, HPGW, HPOMC, DMAG.

Harry is returning to Hogwarts to complete his final year after the war, everything is great until Snape makes a life changing choice which changed everything for Harry and Draco...