The pro dancer has had huge success in dance contests and on Strictly both in the UK and South Africa, but said that for the first time, he was able to be open with his mum thanks to his partnership with Whaite.
Read more: Strictly 2021's best moments of the series
Speaking to Yahoo and other media, Radebe explained: "For what it represents, John did say that he was a little bit apprehensive as well, dancing with another man on the show and I think as well for me, for all kinds of reasons.
"But my mum's relationship with me has improved and it has improved because of this partnership. For that, I've won. I've won because my mum follows my journey with joy, religiously, which is something that hasn't happened in I don't know how (long).
"That for me is the biggest take away from this partnership."
Asked whether it had brought him and his mum closer for the first time, he replied: "It has, because we've never confronted me and my issue and this whole thing.
"I knew that when I told her about the partnership, she said, 'oh, you're dancing with a man?' I said, 'Yes, Mummy, I'm dancing with a man and his name is John.'
"There was this awkward silence and she was like, ok. I think like everyone else she was waiting to see how it played out because she's such a traditionalist and I remember our first Tango, she called me and was like, 'that was brilliant'. It has been special."
Radebe also admitted that he had been determined to get matched with former Bake Off winner Whaite as soon as he was announced as a contestant.
He said: "Listen, when he got announced I went down on my knees, I prayed, consulted with my ancestors, I was like 'Africa, come through'.
"I was being very selfish about it all because I was like, 'I want him. They better give him to me, I deserve this'."
Whaite and Radebe will compete in tonight's final alongside Rose Ayling-Ellis and Giovanni Pernice. AJ Odudu and Kai Widdrington have been ruled out of the final after Odudu suffered ligament damage to her ankle.
Strictly Come Dancing 2021's final airs tonight, 18 December at 7pm on BBC One.
Watch: John Whaite will live life by 'Johannes-isms' after Strictly