He wants to be white

So my 13 year old brother wants to be white he watches white boys on YouTube amd he recently told me that he wants blond and straight hair and i explained to him we're black your hair is never going to do what those white boys hair does, my brother does not like braids or his natural hair he believes that his biological mother was white even though she was black and his father was black his entire biological family is and always will be black he has met them before there pictures of them all together and they are all black my brother is 100% black he's not even light enough to pass off as white i really think he believes in his heart that's he's white i think it's because he watches them white people on youtube those spoiled rich white kids and he wants to be just like them when he told me my boyfriend made a joke about it but now I realize that he really wants to be white and i have told my brother that is never going to happen but he still wants to be white i have shown him important black people and try to tell him how black people influenced so much of what we have today but he still wants to be how do i help him

Also don't know what group to put this in