i'll never leave you
A phrase people use when they're desperate and don’t know what else to say. It’s like when someone says it, and then the next day they’re gone with a suitcase and a bad attitude.
'I’ll never leave you,' she said, then packed her bags and left.
'I’ll never leave you,' he said, then packed his car and drove off.
'I’ll never leave you,' he said, then left to join the military.