"Kate and William are opposites and they say opposites attract. I think William needs his own rock, his own steadying force, I think that's what Kate really is for him," Debbie Frank told UKs The Royal Box.
"He's very sensitive and I think he actively didn't want to marry someone who was going to dissolve into a heap, and Kate's strength is a source of sustenance to him," she continued.
Meanwhile, the same can't be said about Prince Harry and Meghan Markle. According to Debbie, Harry is 'devoted' to his 'firecracker' wife.
"Harry loves to do things for other people," Debbie explains. "He's a bit more like the royal servant even though he is the royal prince. But he would just love to do everything he can for her. He's very devoted."
Debbie also went on to discuss Meghan and Kate's relationship, saying the pair have very little in common.
"Kate is much more a person who is careful and cautious. She's going to just do things properly and slowly and think about things. Meghan is a tour de force in her own right, she is all about the Meghan Markle brand so we'll watch this space for that."
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