A royal author has revealed insights into Prince William and Kate Middleton's relationship.

The expert claims that the couple has terrible rows where they throw things at each other.

Palace aides surrounding the couple cause them stress, creating an atmosphere like a Jane Austen novel.

William's signs of annoyance are calling Kate "darling" when he is cross with her.

Kate is described as the calm one who will pour oil on troubled waters.

William is a bit hot-headed, but he gives way due to his past emotional turmoil.

The author defended the couple's private moments as normal for all couples.

The information comes from the book "Gilded Youth: An Intimate History of Growing Up in the Royal Family".

The author is Tom Quinn.