Dominic West got candid about his falling out with Prince Harry.

West appeared in Sunday's episode of "Sunday Morning" on Times Radio. During his guest appearance, he was asked about his friendship with the Duke of Sussex, and he confirmed that they were no longer on speaking terms due to him oversharing some intimate details about the royal.

"We sort of [lost touch because] I said too much in a press conference, and so, we didn't speak after that," West, 54, explained, per Us Weekly.

Host Kate McGann grilled the actor, urging him to spill more tea about their severed bond. West recounted their trip through Antarctica with the charity Walking With The Wounded in 2013 to support wounded veterans, which he discussed in a press conference a year later.

"I think I was asked what we did. [And] what we did to celebrate when we got there and [I] probably said too much," West shared.

In the 2014 interview, the former "Les Miserables" actor was asked to speak about his time with Prince Harry. He was then thrilled while he recounted their time together.

"[Harry] was very much part of the team," West said, per Mirror. "He seemed to specialize in building latrines. He built this incredible castellated structure with blocks to keep out the wind, and it even had a [toilet] roll holder."

West said their friendship ended "over 10 years ago," so the actor playing King Charles in Netflix's "The Crown," couldn't tap on Prince Harry, 39, for input on how to play his father in the show.

West previously spoke with Variety about playing King Charles in the hit series. In "The Crown" Season 6, episode 4, he portrays the King gently waking up his two sons, Prince William (Rufas Kampa) and Prince Harry (Fflyn Edwards), to break the tragic news about Princess Diana's death. West said Prince Harry's memoir "did slightly affect the way we played that key scene."

In Prince Harry's book "Spare," he wrote how the monarch assured him that "it's going to be OK" while placing a hand on his knee after telling him that their mom had just passed away. Prince Harry added that it "was quite a lot for him."

The "Wire" alum, however, added that the book was not his only source material. He also read newspapers and journal articles about King Charles.

Tags: Prince Harry Dominic West The Crown