Elton John reflects on how his mother, Sheila Farebrother, tried to ruin his civil partnership.

The iconic singer opens up about the family turmoil in his new memoir, Me. The story was excerpted by DailyMail ahead of the book’s release on Oct. 15.

“I was as happy as I could ever remember being,” John says of his 2005 civil partnership with David Furnish. “That was the moment my mother turned up, in character as a raving sociopath.”

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“Despite various entreaties to come into the house, they just sat there, stony-faced,” the singer writes. “There, Mum announced she wouldn’t be joining the convoy of cars setting off for Windsor nor would she be coming to the private lunch afterwards.”

John thought to himself at that moment, “Oh great. The most important day of my life and one of Mum’s moods appeared to be upon us.”

“When David and I exchanged our vows, she started talking very loudly, over the top of us, rattling on about how she didn’t like the venue and couldn’t imagine getting married in a place like this,” he says. “When the time came for the witnesses to sign the license, she signed her name, snapped: ‘It’s done, then,’ slammed the pen down and stormed off.”

The situation was bad enough to draw a reaction from Sharon Osbourne. She whispered to John, “I know she’s your mum, but I want to kill her.”

John later found out Farebrother contacted Furnish’s parents in an attempt to stop the civil partnership. Farebrother allegedly feared it would damage John’s superstar career. “She had never been homophobic,” he writes.

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“I think the real problem was that she hated anyone being closer to me than she was,” John asserts. “She couldn’t cope with the tough of the umbilical cord finally being cut and she didn’t care about anything else, including the fact that I was finally happy.”

The son-and-mother relationship deteriorated. It only began to mend in 2017 after John learned Farebrother was seriously ill. When John told his mother he loved her, she allegedly replied, “I love you, too. But I don’t like you at all.”

Farebrother passed away in December of that year.