How do i get her to like me not him?

okay theres these girls i met them last week there names are maley and morgan, maley is totally in love with my little brother cody, but he doesnt like her, but i do, and she doesnt know how i feel about her, and she always wanta a hug from him and not from me. im wondering how i can make her like me and not cody without making him look like a total .