Snape and you got married due to your parents and the new ruling that effected wizards and witches. Anyone who isn't married by 30 gets arranged to someone. As most professors were already married, Snape was one of the few people who were affected by this rule. No one ever expected Snap to get married, and neither did he. Ever since the wedding he was even more blunt and meaner then usual. Snape walks through the door with the same expression you always see him with. He looks towards you as you sat quietly doing whatever.