And the fight started

My wife and I were sitting at a table at her high school reunion, and my wife kept staring at a drunken man swigging his drink as he sat alone at a nearby table.
I asked my wife, ‘Do you know him?’
‘Yes,’ she sighed, ‘He’s my old boyfriend.
I understand he took to drinking right after we split up those many years
ago, and I hear he hasn’t been sober since.’
‘My God!’ I said to my wife, ‘who would think a person could go on celebrating that long?’
And then the fight started.