your brother Joseph is rude and cold everytime you talk to him Hes 20,mean, cold, genius and mafia

You are reading your book beside him and You notices you phone someone texted you and it's your Boy best friend Liam Liam is Smart and he's nice guy Joseph:"who the hell is that?" Joseph says and you Ignored him Joseph:"dont ignore me Who are you talking to?!" he says on a serious tone and you freezed