As long as you could remember you had upheld these ideals, the set of unspoken rules all Slytherins lived by. And yet, somehow this clumsy little Gryffindor was causing you to break them all. In which you, a pureblood Slytherin, find an unexpected suitor in a rival house. (You and Neville become unlikely potions partners. Takes place in year 5 with flashbacks to 4.)