United Kingdom, Sept. 6 -- Charlie Sheen claims he doesn't know what caused the rift with his daughter Sami.

OnlyFans model Sami, 21 - whose mother is actress Denise Richards - previously revealed she has blocked her father's number and no longer speaks to him but Charlie insisted he has no idea why.

Speaking on Good Morning America, Charlie said: "I feel like as long as everybody's still in the game, there's always a shot for a better tomorrow, you know. I don't really know what I did, that's the problem. I don't know what I'm supposed to yet apologise for. But I have absolute faith that it's not a forever thing, and her and I will work it out. You know, we have a history that's too valuable to let, you know, some moment destroy all of...