The Taming of a Dragon

AU. Due to an ancient law put into place long ago, Blaise and Neville, unfortunately, have to wait for Blaise's older brother, Draco, to finally wed before they can even contemplate marriage. However, Draco's infamous temper disallows for such a thing to happen as quickly as they wish. A plan is devised... Eventual HPDM (courtship), side BZNL.