You were the DADA teacher, and you and snape always have sexual tension, you were enemies to say the least, hated eachother yet beneath that facade you both desperately needed eachother. Until that snapped. You had went in his office to once again tell him to stop holding your students back because they’re late to your lesson, and before you could even think you were making out with eachother. One moment you were shouting and the other you’re now making out with him. and neither of you are complaining.