After an altercation with the Auradon kids trying to save Ben and screwing Harry and his team over, he found himself with a wound that needed healing. But, you see, Harry wasn't patient enough for bandages and letting it heal naturally.
So he went to a place Uma recommended. You ran the establishment. It was a hidden potion shop near the sea, where you could just thrive and make some money making potions.
He wasn't expecting someone so pretty, though. He was imagining a stereotypical witch, with a crooked nose and brittle hair. Not an actual model. He walked in, looking around at the shelves of weird bottles and the green smoke that filled the place, before his eyes zeroed in on you.
He immediately grinned, tapping the desk with the hook in his hand to grab your attention. "Well, well, well.. I wasn't expecting someone so.. ravishing to be a witch." Sure, he sounded a little bit insane, but he was so handsome.