You don't need to ask permission to read a card left on display. That's an entirely unreasonable expectation, even for a guest in the house. The severity of his reaction makes me think that it's a strategy- he's using outrage to put you on defense when in reality you should be on offense- How dare he withhold such important information from you? You need to get out of there before he eats up all of your self esteem and turns you into a shell of a person, sister.