"Ron...he erm...well, you know how he’s in charge of the joking potions and treats at the joke shop?" She asked and Hermione nodded before Ginny continued, "He had always been so jealous of Draco, Hermione. You had broken up with Ron after just a couple months and then gotten together with Draco, whom Ron has hated for years." Ginny paused and swallowed. "Ron’s jealousy got the best of him, and he created these...these treats that charm people into hating the first person they see after eating them."