Search Results: problems with girlfriend''s sister

My brother treats his girlfriend way better than he treats his own family. I wonder why that is? We do a lot for him. About 3 years ago his girlfriend broke the washer and he was reassuring her that it was okay and don't worry about it. He goes to his friend that knows about washers and gets a new one with no problem. Today the same thing happened and we tell him and he goes ballistic and says that he doesn't want anyone to wash their clothes anymore. He will also tell me to do his hair every morning and interrupts my sleep and not wake up his girlfriend to do it. He makes fun of women and says how he dislikes them and thinks men are superior. His girlfriend will talk crap about the family and he'll just laugh about it and think its funny but when we talk about her family or her in general he'll get so pissed off. He seems to have selective hearing and never talks to me but will listen to certain people like my sister, his girlfriend, and other things but never me. But in other words when she does something or makes a mistake, she won't get yelled at or reassured that it's alright but if we do something like that he'll yell at us and scold us or even threaten us. I don't understand why he does this. Bothers me so much.