Prince William and Princess Diana Lead
Credit: Tim Graham/Getty

Warning: You might need a tissue after reading this one. Prince William opened up about his mother Princess Diana's passing as he comforted a teenage boy who lost his own mom last summer.

During a visit to Keech Hospice in Luton, England Wednesday, The Duke of Cambridge told 14-year-old Ben Hines, "Time makes it easier. I know how you feel. I still miss my mother every day—and it's 20 years after she died," according to People. Prince William was just 15 and Prince Harry was 12 when Princess Diana died in a car crash in August 1997.

As Hines shared sweet memories of his mom, who passed away from cancer in June of last year, Prince William reportedly listened intently. The teen recalled how "lovely" his mother was and how she would insist he and his brothers, Thomas and Richard, have a Chinese meal for a treat. "I miss her so much," he added, telling the prince the hospice has helped them a great deal since her death, with counseling and music therapy, among other things.

Before William left the hospice, he told the family, "Promise me that you will talk to each other," adding that men are not "great sharers." Kate Middleton was also on hand at the hospice, and bonded with a 6-year-old boy who lost his older brother two years ago.