He has never experienced a devastating experience as today. Alice ruined the respect he had of her and she broke his heart with how vile and short tempered she portrayed in public.
He was deep in thoughts, this was the last straw. He had heard a lot of bad news about Alice. People who came in contact with her always had something negative to say about her and he felt they were just jealous or they couldn't understand Alice the way he did.
Alice was his best friend and yea she's a big cry baby and spoiled.
He feels Alice has good in her but she's too insecure, but she was not just insecure she had bitterness, hate, inferiority complex and had a very vile character.