I've been trying to find a story here that I read before, I can't remember the title or who it's written by.
Lucius Malfoy sends Snape a lust potion, the bottle brakes when Hermione is in the room. Then Snape lusts after her. They get married, Snape is not able to take points from Gryffindor, points are removed from Slytherin, instead.