Her relationship with Bing happened after she split with Hugh Grant in 2000, at which point she was punting herself around the US looking for a rich husband. She lost the Estée Lauder contract in 2001 and wasn’t getting much in the way of film work because, let’s face it, she is not a great actress. Frankly, Steve Bing probably looked like a great option: very rich, well-connected, a film producer who could lean on contacts to give her roles. Unfortunately he didn’t want kids and wasn’t playing.
She had Damian in 2002, I think, and married that Indian bloke, Arun Nayar, in 2002. Dropped down a league in the rich husband stakes.