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The pair’s bond is believed to have survived the notorious bridesmaid dress row, with Harry and Kate going on to attend the Anzac Day service together in April 2019.

Meanwhile the Princess is also believed to have initially acted as a ‘peacemaker’ between Harry and William.

However she was said to be ‘deeply wounded’ by the Duke and Duchess of Sussexes’ ongoing media bombshells, and found the joint walkabout in Windsor ‘the hardest thing she’s ever had to do.’

Here FEMAIL reveals how the relationship unraveled… Kate started dating William in 2003, after meeting him at the University of St Andrews. Soon after, she met Harry.

He was still a teenager, about to leave Eton, and was deciding what to do with his life.

Harry revealed in his book Spare how he had worries about the princess taking his brother away from him.

He detailed how he ‘consoled’ himself by thinking about the fun they would all enjoy together in the future.

After an extended gap year, when he travelled to Australia and Lesotho, he finally went to Sandhurst in 2005.

A source at St Andrews told Daily Mail in 2016: ‘From the earliest days, Kate always maintained an open-door policy to Prince Harry.