Strictly Come Dancing professional Nadiya Bychkova has spoken about dating her co-star Kai Widdrington, saying "it's early days but I feel relaxed". Ukraine-born Bychkova, 32, has been a professional dancer on the hit TV show since 2017. In an interview with the Daily Mail Weekend magazine, Bychkova has spoken openly about her relationship with fellow Strictly professional Widdrington, 26.