Draco when he showed you his dark mark. He had been trying to scare you away from him. He wanted you to run away from him; he couldn't face the pain of doing it himself. Of course, you weren't phased by his efforts. You loved him too much.
❝ Can't you see that I'm trying to protect you, y/n? ❞
❝ Just let me help you, Draco. ❞