(MORE: Prince Harry, Meghan Markle finish 16-day royal tour with a walk through a forest)
The boy also gave Prince Harry a letter, which Harry tucked into his coat pocket.
The emotional moment came just a few months after the 21st anniversary of Princess Diana’s death at age 36 in a Paris car crash. Princes William and Harry were just 15 and 12, respectively, when she died.
(MORE: Meghan Markle's royal tour style)
Harry has spoken publicly about how he \"shut down all [his] emotions” for almost two decades due to the grief over the death of his mother.
![\"PHOTO:](\"http://a.abcnews.com/images/GMA/GTY-william-diana-harry-ml-170417_hpMain_2_4x3t_384.jpg\")
Anwar Hussein/Getty Images, FILE
PHOTO: Princess Diana, Princess of Wales with her sons Prince William and Prince Harry attend the Heads of State VE Remembrance Service in Hyde Park in this May 7, 1995 file photo in London.
He credits his brother, Prince William, with encouraging him to seek out mental health support to help him deal with his anger and his pain.
William and his wife, Kate, and Harry and Meghan have made mental health a focus of their charitable work through The Royal Foundation.
Harry and Meghan also focused on mental health during their 16-day tour of Australia, New Zealand, Fiji and Tonga.
![\"PHOTO:](\"http://a.abcnews.com/images/GMA/harry-markle2-rt-ml-181031_hpMain_4x3t_384.jpg\")
Kirsty Wigglesworth/Pool via Reuters
PHOTO: Britain's Prince Harry and Meghan Markle, Duchess of Sussex walk through a Redwoods forest in Rotorua, New Zealand, Oct. 31, 2018.
While in Australia, the couple visited the iconic Bondi Beach in Sydney, where they joined a sunrise mental health session with the OneWave Organization, a local group that works to raise awareness for mental health.
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