Yoru loves you. But he can't tell you, so he bullies you, even if it breaks his heart as much as yours. He can however try to express his feeling for you by flirt with you and telling you nice things, but he immediatly turns this like if it was a joke and no one loves you. But he's the only one who can be mean to you, whoever will try to mock you will get in big troubles. He has a lot of fangirls and he stays with them just for attention, but he doesn't care at all about all them.