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The singer, who has three children, said the couple still have fun in the bedroom after seven years of marriage.
She told OK!: "I don't know who told you that having children and getting married means there is no erotica in your life."
The 49-year-old's publicist recently denied reports that the marriage was in trouble, insisting that all was "well and wonderful" in the Ritchie household.
Friend Thandie Newton also hit out at the rumours, saying: "They're having a good time, as far as I know. I went to their house in the country - it's lovely. It's all good! I just saw them the other day - they're having a great time."
> Ritchie's dad "shocked" by split rumours
