As a regular of the bar, Noah's Yard, she persuaded staff to swap their original sign to 'Paul, I am divorcing you' after finding out that he had been having an affair.
This closely followed by a second sign, reading: 'BTW I am keeping the dog.'
Just a year ago, the unnamed woman used the same board to propose. At the time, it was changed to 'Marry me, Paul?'
The couple have been together for years and her husband is reportedly "furious" after she told him to read the sign in South Wales.
"I did feel a bit better once the sign went up. I just wanted to name and shame him," the woman was quoted saying in the Daily Express.
"I went through a mixture of emotions, but felt angry and wanted him to pay."
The owner of the Swansea bar, said: "Maybe this will become a new way to divorce."
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