Nobody was more devastated by the late Princess Diana's death than her youngest son, Prince Harry. And now two decades after the death of his mother, Prince Harry opened up about his feelings.

It seemed like the prince hasn't really moved on yet. In fact, Prince Harry has revealed that he still has "buried emotions" over the death of Princess Diana. The prince has revealed the details on a new ITV documentary entitled "Prince Harry in Africa."

"I never really dealt with what had actually happened," Prince Harry said. "I still didn't even want to think about it."

The world can still probably remember the car crash in Paris that killed Princess Diana back in 1997. According to E! News, Prince Harry was only 12-years old at that time. Prince Harry said that he has spent his young adult years never dealing with his loss.

Meanwhile, the ITV documentary follows Prince Harry for Sentebale. Entertainment Tonight noted that this was a foundation the prince has co-founded in honor of his mother.

Apparently, Princess Diana was working for and supporting children who have AIDS and HIV. She has fought on their behalf to prevent and stop the stigma surrounding the disease. Princess Diana was also the first royal to hold and hug HIV and AIDS victims without wearing gloves.

With that, Prince Harry helped Sentebale, an organization helping the youth with the disease. For the prince, it was exactly like completing the job his mother never got to finish. The prince even shared that he wants to do something that will make Princess Diana proud.

Prince Harry has been actively helping and promoting HIV awareness with a charity concert with Coldplay. He even enlisted himself for a public HIV test to spread awareness together with pop singer Rihanna. He has also joined in campaigns against the disease.