Prince William and Kate Middleton have heated arguments, according to a new book.

The arguments are blowout-level and can involve throwing things.

William can become hotheaded, and people can tell when he's upset.

Kate is the calm one who tries to defuse the situation.

The fights are typical for all couples.

Kate and William were together on and off from 2003 to 2010.

They share three children: Prince George, Princess Charlotte, and Prince Louis.

Palace aides surround the couple constantly.

Their life is similar to a Jane Austen novel.