@Save_FolieADuex No offense to your brother, but his opinion seems very invalid. Just because someone has colored hair doesn't make them sketchy or anything and even if he was right about her sitting with a lesbian person there is nothing wrong with that... like what's bad about lesbians? One of my best friends is gay. If you actually know this girl well enough, then there shouldn't be a problem. Tell your parents what you think about your brother's opinion and be nice, but assertive about it. Tell them how nice the girl is and if your mom has already met her, then I don't see why her opinion should change because of your brother's invalid one. :)