Emma Brady said a friend called her after seeing the website
A woman found out her six-year marriage was over when her husband posted it on the internet, a court heard.
Emma Brady, 35, said she learnt of the divorce when her spouse changed his Facebook status to read: "Neil Brady has ended his marriage to Emma Brady."
Details of the break-up came as Brady was sentenced by Blackburn magistrates for assaulting his wife at their home in Accrington, Lancashire.
Brady pleaded guilty and was fined £580 with £75 costs and £100 compensation.
Mrs Brady said a friend in Denmark saw the online posting and called to ask her how she was.
She said she was "shell-shocked", despite the relationship having "ups and downs".
The couple had been on separate nights out last Christmas and a row broke out when they both arrived back at the marital home, the court head.
The court heard Brady, 39, wanted to see his wife's mobile phone.
She refused to hand it over and he grabbed and injured her wrist before throwing her out of the house, the court was told.
Gareth Price, defending, said his client denied that his wife first learnt of the divorce on Facebook and said the relationship had become increasingly strained.