I'm angry with my girlfriend and her friend over the way they treated my friend
Why do you think they did that?
They are both pretentious bitches.
I'm sorry they treated your friend that way. I can understand you calling those women pretentious, but generally it's not good to call them bitches.
I'm entitled to my point of view. You should not question my language.
You are entitled to your opinions, but that language is uncalled for. Try and speak in gentler words from now on.