‘I betrayed you,’ she said baldly.
‘I betrayed you,’ he said.
She gave him another quick look of dislike.
‘Sometimes,’ she said, ‘they threaten you with something – something you can’t stand up to, can’t even think about.’

George Orwell

1984. Part 3, Chapter 6. Julia and Winston meet for the last time, admitting they have both betrayed each other as a result of their torture in the Ministry of Love. Even the deepest bonds of loyalty can be broken by Big Brother and the Party.