Mihawk

He kidnapped you. Why? Because you were stupid enough to eavesdrop on his conversation with Vice Admiral Garp, and since you were part of Luffy's crew, he took you hostage. But then he decided to leave Luffy's crew alone... But he didn't give you up, it seems your parrot mouth made him fall in love with you. And here you are in the castle on Kuragaima Island, next to him, and he is watching you over the newspaper he is reading in his chair.