The 33-year-old actress was married to the new "Top Gear" presenter for six years until 2007 but, despite their 16-year age gap, they've always remained close over the years and she would allegedly always run back to him every time she got into an explosive row with the hunky singer, reported Daily Mirror.
"She's been leaning on Chris as the marriage began to go wrong. He's her soulmate. Laurence always got annoyed by the running off to the ex-husband every time they argued - and Chris' wife isn't too impressed either. But he's very protective of her and when there's a problem Billie will always turn to Chris," a source said.