The man could not understand why his former wife became “so aggressive” when he informed her of the new arrangements, the court heard.
On Wednesday Mr Justice Bodey ruled that she was entitled to nearly half of her former husband’s £13.6 million fortune.
The Family Division of the High Court, heard that the couple, who cannot be named and are from London, married in the late 1970s and divorced in the 1990s.
The judge said they treated the divorce as “just a piece of paper” and carried on living together.
About five years ago the man, who is in his 70s, met another woman.
“The husband installed the other woman and her 12-year-old daughter into the marital home,” said Mr Justice Bodey.
When the man asked his former wife, who is in her 50s, if she would remain in the home “as some sort of housekeeper”, she found the suggestion “very demeaning and upsetting”.
The man told her that he would “commit suicide or go on hunger strike” if she “went to court regarding financial matters”.
But litigation started and “he could not come to terms with why she, through her lawyers, had become so aggressive”, Mr Justice Bodey said. The judge ruled that there was “no distinction” between the couple’s life before and after the divorce and that she should receive more than £6 million.
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