Forgive and Choose to Forget (AKA Obliviscatur Volunatrium)

"Forgive and forget," Slughorn said, pacing across the front of the room, hands across his wide belly. "We all have a lot to forgive," he paused for dramatic effect and looked at them over the rim of his tiny spectacles, "and a lot we'd like to forget." / EWE, Dramione, One-Shot