I'm glad you feel that way
You say this when someone disagrees with you, and you're too lazy to fight, so you act like you're happy about their dumb opinion just to get them to leave you alone.
'I'm glad you feel that way,' she said, even though she knew he was wrong.
'I'm glad you feel that way,' he said, then went to watch TV and forgot about the conversation.
'I'm glad you feel that way,' she said, and then left the room without another word.