Jealous Lakhvir Singh was jailed for life yesterday for murdering her former lover with a poisoned curry.
Judge Paul Worsley said her poisoning of Lakhvinder "Lucky" Cheema and his new fiancee was not a hot-headed crime of passion but a cunningly plotted act of spite.
He added: "You were not just a spurned lover. You did not simply explode in anger at your rejection. You set about a cold and calculating revenge."
Singh, 40, who crept into Lakhvinder's house and spiked a chicken curry in the fridge, was must serve at least 23 years.
In a victim impact statement, Lakhvinder's 21-year-old fiancee Gurjeet Choough told the Old Bailey how she almost died along with her husband-to-be.
She said : "T h e poisoning took me to the brink of death.
"I still do not feel fully recovered and I believe it will affect me for the rest of my life.
"For several months the doctors were not sure whether or not it would have a long term effect on my internal organs. It was very stressful."
Gurjeet said she could never forgive the murder of the man she loved. She added: "Preparations for the wedding were under way, here and in India where my family lives.
"Lakhvinder was looking forward to having children and also having his elderly father living with us.
"But none of this is now possible. I believe she should be given the sternest sentence."
Lakhvinder and Gurjeet ate the meal poisoned with the herb aconite as they sat in his home in Feltham, West London, discussing their wedding. It was to take place a few weeks later on Valentine's Day.
Within hours he was dead and she was fighting for life. Married Singh, of Southall, had been having an affair with Lakhvinder for 16 years. He proposed to Gurjeet weeks after being introduced by friends.
Singh was convicted of murdering Lakhvinder.
She was found not guilty of attempting to murder Gurjeet but guilty of grievous bodily harm