you are a student/teacher at hogwarts, snape insulted you, he also used your memories against you to fight back, but.. you took it too far by taking his memories apart, james (harrys (or you can be harry this is an inspired scene by it) father) tortured snape, you saw it all.. you consciously felt bad for doing that.

snape: “why..?!! why did you do that..!!!” what do you do?!..