London, April 3 : Heather Mills has vowed to break-up ex-husband Sir Paul McCartney's new romance with Nancy Shevell.
The 40-year-old former model is planning to call up Shevell to warn her off a relationship with the former Beatle. "Heather's threatening to call and explain the dangers of dating a Beatle," the Mirror quoted a pal, as saying.
"She had hell with the public hating her and reckons Nancy could too. Heather genuinely thinks she's doing Nancy a good turn," the pal added.
Mills is believed to have felt 'deceived and betrayed' after photographs were released of Macca and Nancy enjoying a romantic stroll along a beach in a private Caribbean resort.
Nancy was seen rubbing sun cream onto Macca's back as the pair relaxed on a boat.
A source said that Mills is terrified Macca is planning to have a baby with Nancy and she is worried he will spend less time with Beatrice.
"She went ballistic when she found out. She is also terrified they're planning a baby - even though Nancy's not far off 50 - and thinks another child will detract from Beatrice," the source said.