We adore the Royal family, but how much do we really know about them?
Most of us think we know all the tragedies they've faced, since their lives are so public, and yet every year we learn something new.
Most people have no clue what the day-to-day life of a royal consists of. If you think their lives are a fairy tale, you're mistaken.
We all know that the Duke of Cambridge recently welcomed his third child, Louis, but how many of us know about his work life?
Last year in July, Prince William announced that he's leaving the East Anglian Air Ambulance service due to mental health reasons.
He started working with the team in March 2015 after serving as a helicopter pilot with a search and rescue force.
He has saved dozens of lives across the country, but there was one boy that he just couldn't save.
What happened on that tragic day may have been one of the reasons why he resigned two months later.
The Never-Ending Search
Robbie Lea, a 16-year-old boy from southern England, was enjoying a sunny day with his friends in May last year when the unimaginable happened.
Robbie and his friends went by a lake that they usually hang out, and because it was very hot on that particular day, they decided to go in the water for the first time.
"They both got to the island and sat for about five minutes to catch their breath. [His friend] Kieran said it was harder than he thought it would be," Detective Constable Vikki Murray told the court.
"They decided to swim back but it seemed further away. Then Kieran became aware of Robbie shouting. They were about halfway across. Kieran could see Robbie struggling. Robbie grabbed at Kieran and Robbie went under the water," he continued.
Robbie's friends went to call emergency services to search for the drowning boy, and that's when Prince William arrived.
"We knew something was up when a helicopter was flying extremely low just over the Lee Valley Park," an eyewitness told Express UK.
"We could see it was landing so ran over to see what was going on. Little did we expect to see Prince William himself flying the helicopter."
The Duke of Cambridge scrambled to the scene and combed the area in search of Robbie.
After an hour long search, the 16-year-old boy's body was found under almost 15ft of water in Lea Valley Park.
Not too long after, a paramedic pronounced him dead.
What was once an "exciting and challenging" opportunity for the royal turned into a "moment of extreme emotion."
The Prince has saved countless of lives, but I think it's safe to assume that the ones that he couldn't save took a toll on him.
There's no evidence that Robbie's death was the sole reason Prince William left the air ambulance service, but it's hard to imagine that it didn't play a factor.
Here's what he had to say:
"Over the past two years I have met people from across the region who were in the most desperate of circumstances. As part of the team, I have been invited into people's homes to share moments of extreme emotion, from relief that we have given someone a fighting chance, to profound grief. I have watched as incredibly skilled doctors and paramedics have saved people's lives. These experiences have instilled in me a profound respect for the men and women who serve in our emergency services, which I hope to continue to champion even as I leave the profession. I am hugely grateful for having had this experience."
Did you know Prince William was a helicopter pilot?
[H/T: Daily Mirror/ Eastern Daily Press]
Here are 10 more brave celebrities who were willing to give their lives to save someone else.