The bitter argument erupted on the platform at Guildford, Surrey, between the two would-be crew members of the 5.20pm train to Waterloo.
The rowing pair were led off by British Transport Police officers so that they could cool down, and the train was cancelled.
Angry passengers were forced to wait 30 minutes for the next train to arrive.
A British Rail spokesman said: 'The driver, a man, and the guard, a woman, used to live together. They had a bit of a tiff on the platform yesterday and the train had to be cancelled, which didn't go down too well.
'They were not disciplined, but I think they just needed a bucket of water thrown over them.'
The pair, who were both in their thirties, have not been named.
The British Rail spokesman added: 'It is a more interesting reason for cancelling a train than leaves on the line or the wrong type of snow.'Reuse content