Clever move.

Gerald's eyes, as wide as saucers, remained on the wand. His expression was one of shock mixed with slight confusion. Shock, because of the words being thrown at him and confusion, because of the basis of the explanation itself. There was no way he was going to believe that magic existed but your Insulation Charm seemed to have sealed the deal. Not only did the shivering stop, but the complexion on Gerald's face was starting to brighten.

At the Memory Charm, Gerlad's eyes widened even further and seemed to have gained a blank look about them. All sense of shock and confusion disappeared instantly and was replaced by a blank look, instead. He might have been looking in your direction but there's every chance that he could've been looking off into the distance as well. "We are perfect strangers," he repeated. His voice was robotic and didn't have the spark it once had. "We met in the forest. Unintentionally. I came to look for a rare plant. I can't find what I'm looking for so I'm going to go."

His eyes land on you again and he blinked a few times. The blank look was gone and the confused look was back once again. "Yeah.... you too. Bye... Ben? Yeah..." And with that, the man turned around and walked into the shadows between the trees...

Do you follow or go your own way? The choice is yours.