President Obama and House Speaker John Boehner have had five years of fights and negotiations to learn how to work together.
The relationship has had ups and downs. Today it's as sour as it's ever been.
Even if they had a warm friendship, it might not be enough to solve the government shutdown. But the chilliness doesn't help.
'We Get Along Fine'
Their relationship has been a constant source of fascination in Washington. Interviewers ask the two men about it all the time.