As of 2015, Nguyen Cao Ky Duyen's boyfriend is Duy Han, who is a financial analyst. There are no sources that confirm that the two are living together.
Nguyen Cao Ky Duyen is a famous name in Vietnamese culture. She has appeared in a variety of shows on the Vietface TV channel, and she is currently the co-host of "Paris By Night." As of 2015, she has an active Facebook page that has over 1,300,000 fans. Her Facebook page also has several pictures of her during her day-to-day activities, such as visiting several makeup stores and posing with the products.