“Luke Thompson got mixed up with the other Luke – Newton – on the show,” Nicola explained (via The Sun). “They offered him a personal trainer for his intimate scenes, and we don’t get all the scripts at once, so he was like, ‘I wonder what that’s going to be?’”
Article source: https://www.huffingtonpost.co.uk/entry/bridgerton-behind-the-scenes-facts-secrets_uk_623ca49ce4b0f1e82c550778