Because he wants some privacy with his friends. If you want to be included when he has friends over and he doesnt want you to hang out with them, then leave them alone and maybe he wont be mean to you. Hope this helps :)
gay
"My brother is annoyingly boisterous when he has friends over."
A moment of silence.. For our brother in the friendzone list.
Its provably that hes too shy to do it himself, but talk to him!
it means your either brother and sister or your close
get over him
Grow up. Volunteer somewhere. Put it behind you and move on.
At certain points your friends will ignore whatever your brother because he is your brother but if your brother crosses the limit then your friends will never forgive him. Try to tell your brother that he is making a mistake
Because he's trying to impress his friends.
Maybe she is spying on him for one of her friends, to know for sure ask her yourself.
It means he wants to meet your brother. Why try to read something into it, perhaps he just wants more friends.
Even though your brother may be a pain to you off and on never desert your brother and good friends would not expect you to make that choice. Stand by your brother and find new friends.