Son and mother...

“She said it so often—sometimes to him, and sometimes to herself. He would catch sight of her, leaning against the great stone wall while the others were eating, watching the snow fall outside, whispering, ‘He knows nothing.’

'Jaime,' he heard her say once, 'shouldn't I tell him?'

'He's a boy,' her brother had replied. 'A wise one, for his age, but a boy still. What if he can't keep his mouth shut?'

'He should have two mothers, Jaime. All he has is Catelyn Stark, and she's not even half a mother.'

'You think he'll be glad to know that Joffrey is his half-brother, after what happened at the river?'

This drove the Queen to silence. 'I want him to know,' she finally said, while Jon tried to puzzle out what this could possibly mean. 'Before I die, I want him to know.'"